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style=\"color: #0000ff;\">\\(y=ax+b\\)\u306e\u30b0\u30e9\u30d5\u306f\u5fc5\u305a\\((0,b)\\)\u306e\u5ea7\u6a19\u3092\u901a\u308b\u3053\u3068\u3067\u3059\u3002<\/span>\u4f8b\u3048\u3070\u3001\\(x=0\\)\u3092\u4ee3\u5165\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(y=a\u00d70+b\\)<\/p>\n<p>\\(y=b\\)<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\\(x=0\\)\u306e\u3068\u304d\u3001\\(y=b\\)\u3067\u3059\u3002\\((0,b)\\)\u306e\u5ea7\u6a19\u3092\u901a\u308b\u3053\u3068\u304b\u3089\u3001\\(y\\)\u8ef8\u3068\u4ea4\u308f\u308b\u5ea7\u6a19\u306f\u5fc5\u305a\\(b\\)\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2396\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/efgdw4.jpg\" alt=\"\" width=\"574\" height=\"511\" \/><\/p>\n<p>\u305d\u3053\u3067\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3068\u304d\u3001\u6700\u521d\u306b\u5207\u7247\u306b\u7740\u76ee\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\\(y=-2x+3\\)\u306e\u30b0\u30e9\u30d5\u3067\u306f\u3001\\((0,3)\\)\u306e\u5ea7\u6a19\u3092\u901a\u308b\u30b0\u30e9\u30d5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001\\(x\\)\u306b\u3042\u305f\u306a\u306e\u597d\u304d\u306a\u6570\u3092\u5165\u308c\u3066\u3001\\(y\\)\u5ea7\u6a19\u3092\u6c42\u3081\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\\(y=-2x+3\\)\u306e\u30b0\u30e9\u30d5\u3067\u306f\u3001\\(x=1\\)\u306e\u3068\u304d\u3001\\(y=1\\)\u3067\u3059\u3002\u3064\u307e\u308a\u3001\\((1,1)\\)\u306e\u5ea7\u6a19\u3092\u901a\u308a\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\\((0,3)\\)\u3068\\((1,1)\\)\u306e2\u3064\u306e\u70b9\u3092\u76f4\u7dda\u3067\u7d50\u3073\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2610\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/egth5.jpg\" alt=\"\" width=\"600\" height=\"474\" \/><\/p>\n<p>\\(y=-2x+3\\)\u306e\u30b0\u30e9\u30d5\u3068\u306f\u3001\\((0,3)\\)\u3068\\((1,1)\\)\u306e2\u70b9\u3092\u901a\u308b\u76f4\u7dda\u3067\u3059\u3002\u306a\u304a\\(x\\)\u306b\u4ee3\u5165\u3059\u308b\u6570\u306f\u4f55\u3067\u3082\u3044\u3044\u3067\u3059\u30021\u30842\u30013\u306a\u3069\u81ea\u7531\u306b\u6570\u5b57\u3092\u4ee3\u5165\u3057\u3001\u5ea7\u6a19\u3092\u51fa\u3057\u307e\u3057\u3087\u3046\u3002\u8a08\u7b97\u30df\u30b9\u3057\u306b\u304f\u3044\u6570\u5b57\u3092\u4ee3\u5165\u3059\u308b\u306e\u304c\u597d\u307e\u3057\u3044\u3067\u3059\u3002<\/p>\n<p>\u306a\u304a\u4e00\u6b21\u95a2\u6570\u306f\u6bd4\u4f8b\u306e\u76f4\u7dda\u30b0\u30e9\u30d5\u3067\u3059\u3002<span style=\"color: #0000ff;\">\u5fc5\u305a\u76f4\u7dda\u306e\u30b0\u30e9\u30d5\u306b\u306a\u308b\u305f\u3081\u30012\u3064\u306e\u5ea7\u6a19\u3092\u7d50\u3079\u3070\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span>\u30b0\u30e9\u30d5\u306e\u66f8\u304d\u65b9\u3092\u307e\u3068\u3081\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5207\u7247\u3067\u3042\u308b\\((0,b)\\)\u3092\u63a2\u3059<\/li>\n<li>\\(x\\)\u306b\u6570\u3092\u4ee3\u5165\u3057\u3001\u4efb\u610f\u306e\u5ea7\u6a19\u3092\u51fa\u3059<\/li>\n<li>2\u3064\u306e\u5ea7\u6a19\u3092\u76f4\u7dda\u3067\u3064\u306a\u3050<\/li>\n<\/ol>\n<p>\u3053\u306e\u9806\u756a\u306b\u3088\u3063\u3066\u3001\u30b0\u30e9\u30d5\u306b\u4e00\u6b21\u95a2\u6570\u306e\u76f4\u7dda\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u30fb\u50be\u304d\u304c\u5927\u304d\u3044\u3068\u6025\u306b\u306a\u308b<\/strong><\/p>\n<p>\\(y\\)\u5ea7\u6a19\u304c\u3069\u308c\u3060\u3051\u5897\u3048\u3001\u3069\u308c\u3060\u3051\u6e1b\u308b\u306e\u304b\u306f\u3001\u50be\u304d\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002\u50be\u304d\\(a\\)\u306e\u5024\u304c\u5927\u304d\u3051\u308c\u3070\u3001\u5f53\u7136\u306a\u304c\u3089\u30b0\u30e9\u30d5\u306f\u6025\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u50be\u304d\\(a\\)\u306e\u5024\u304c\u5c0f\u3055\u3044\u5834\u5408\u3001\u30b0\u30e9\u30d5\u306e\u50be\u304d\u306f\u3086\u308b\u3084\u304b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2605\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/egth1.jpg\" alt=\"\" width=\"600\" height=\"380\" \/><\/p>\n<p>\u307e\u305f\u50be\u304d\u304c\u6b63\u306e\u6570\u3060\u3068\u3001\u30b0\u30e9\u30d5\u306f\u53f3\u4e0a\u304c\u308a\u306e\u76f4\u7dda\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3067\u50be\u304d\u304c\u8ca0\u306e\u6570\u3060\u3068\u3001\u30b0\u30e9\u30d5\u306f\u53f3\u4e0b\u304c\u308a\u306e\u76f4\u7dda\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u3067\u306f\u3001\u3053\u306e\u6027\u8cea\u3092\u7406\u89e3\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5909\u5316\u306e\u5272\u5408\uff1a\u5206\u6570\u3092\u542b\u3080\u30b0\u30e9\u30d5\u306e\u66f8\u304d\u65b9<\/h3>\n<p>\u306a\u304a\u4e00\u6b21\u95a2\u6570\u3067\u306f\u3001\u5909\u5316\u306e\u5272\u5408\u306b\u3064\u3044\u3066\u805e\u304b\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5909\u5316\u306e\u5272\u5408\u3068\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u3002<span style=\"color: #ff0000;\">\u5909\u5316\u306e\u5272\u5408\u3068\u306f\u3001\u4e00\u6b21\u95a2\u6570\u306e\u50be\u304d\u3060\u3068\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/span>\u5909\u5316\u306e\u5272\u5408\u3068\u50be\u304d\u306f\u540c\u3058\u610f\u5473\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u4e00\u6b21\u95a2\u6570\u306e\u554f\u984c\u3067\u5909\u5316\u306e\u5272\u5408\u306b\u3064\u3044\u3066\u554f\u308f\u308c\u305f\u3089\u3001\u50be\u304d\u3092\u7b54\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(x\\)\u306e\u6570\u304c\u5897\u3048\u308b\u306b\u5f93\u3063\u3066\u3001\u3069\u308c\u3060\u3051\\(y\\)\u306e\u5024\u304c\u5909\u5316\u3057\u305f\u306e\u304b\u8a18\u3059\u306e\u304c\u5909\u5316\u306e\u5272\u5408\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\\(y=2x+3\\)\u306e\u4e00\u6b21\u95a2\u6570\u306b\u3064\u3044\u3066\u3001\\(x\\)\u304c0\u304b\u30892\u306b\u5897\u3048\u308b\u3068\u304d\u3001\\(y\\)\u306f3\u304b\u30897\u306b\u5897\u3048\u307e\u3059\u3002\\(x\\)\u304c2\u5897\u3048\u308b\u3068\\(y\\)\u306f4\u5897\u3048\u308b\u305f\u3081\u3001\u5909\u5316\u306e\u5272\u5408\uff08\u50be\u304d\uff09\u306f2\u3067\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2399\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/efgdw8.jpg\" alt=\"\" width=\"600\" height=\"233\" \/><\/p>\n<p>\\(x\\)\u3068\\(y\\)\u306e\u6570\u306e\u5909\u5316\u91cf\u304b\u3089\u3001\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u4e00\u6b21\u95a2\u6570\u306e\u50be\u304d\u304c\u5206\u304b\u3063\u3066\u3044\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u8868\u3084\u30b0\u30e9\u30d5\u304b\u3089\u50be\u304d\uff08\u5909\u5316\u306e\u5272\u5408\uff09\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5909\u5316\u306e\u5272\u5408\u306f\u4ee5\u4e0b\u306e\u5f0f\u3067\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2788\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/wege14.jpg\" alt=\"\" width=\"500\" height=\"103\" \/><\/p>\n<p>\u516c\u5f0f\u3060\u3051\u3092\u307f\u308b\u3068\u3001\u96e3\u3057\u3044\u3088\u3046\u306b\u611f\u3058\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u516c\u5f0f\u3092\u899a\u3048\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u306e\u304b\u3068\u8003\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305f\u3060\u3001\u4e00\u6b21\u95a2\u6570\u306e\u5909\u5316\u306e\u5272\u5408\u306f\u50be\u304d\u3068\u610f\u5473\u304c\u540c\u3058\u3067\u3059\u3002<span style=\"color: #ff0000;\">\u50be\u304d\u3092\u51fa\u305b\u3070\u3044\u3044\u305f\u3081\u3001\u516c\u5f0f\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/span><\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b0\u30e9\u30d5\u306f\u3069\u306e\u3088\u3046\u306a\u5f0f\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2607\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/egth2.jpg\" alt=\"\" width=\"600\" height=\"475\" \/><\/p>\n<p>\u5206\u6570\u306e\u3042\u308b\u4e00\u6b21\u95a2\u6570\u306e\u66f8\u304d\u65b9\u3084\u5f0f\u306e\u5c0e\u304d\u51fa\u3057\u65b9\u306b\u60a9\u3080\u4eba\u306f\u591a\u3044\u3067\u3059\u3002\u305f\u3060\u4e00\u6b21\u95a2\u6570\u306e\u50be\u304d\u304c\u5206\u6570\u3067\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u5909\u5316\u306e\u5272\u5408\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u554f\u984c\u3092\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\(y\\)\u8ef8\u306b\u7740\u76ee\u3059\u308c\u3070\u3001\u5207\u7247\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4e0a\u306e\u30b0\u30e9\u30d5\u3067\u306f\\(b=2\\)\u3067\u3059\u3002\u6b21\u306b\u50be\u304d\u3092\u51fa\u3059\u305f\u3081\u3001\u5909\u5316\u306e\u5272\u5408\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30b0\u30e9\u30d5\u306e\u5ea7\u6a19\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u5ea7\u6a19\u3067\u660e\u78ba\u306a\u6570\u5b57\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\((4,5)\\)<\/li>\n<li>\\((0,2)\\)<\/li>\n<li>\\((-4,-1)\\)<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u5ea7\u6a19\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\\(x\\)\u306e\u5024\u304c4\u5897\u3048\u308b\u3053\u3068\u3067\u3001\\(y\\)\u306e\u5024\u306f3\u5897\u3048\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2608\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/egth3.jpg\" alt=\"\" width=\"600\" height=\"391\" \/><\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u5909\u5316\u306e\u5272\u5408\u306f\\(\\displaystyle\\frac{3}{4}\\)\u3067\u3059\u3002<span style=\"color: #0000ff;\">\u5909\u5316\u306e\u5272\u5408\u3092\u51fa\u3059\u516c\u5f0f\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u306a\u304f\u3001\u6bd4\u4f8b\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u3088\u3046\u306b\u50be\u304d\u3092\u51fa\u305b\u3070\u3044\u3044\u3067\u3059\u3002<\/span><\/p>\n<p>\u6bd4\u4f8b\u306e\u5f0f\u306f\\(y=ax\\)\u3067\u3059\u3002\\(x\\)\u306e\u5024\u304c4\u5897\u3048\u308b\u3068\\(y\\)\u306e\u5024\u306f3\u5897\u3048\u308b\u305f\u3081\u3001\u516c\u5f0f\u306b\u6570\u3092\u4ee3\u5165\u3059\u308b\u3068\\(4=3a\\)\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u8a08\u7b97\u3059\u308b\u3068\\(a=\\displaystyle\\frac{3}{4}\\)\u3068\u306a\u308a\u3001\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30b0\u30e9\u30d5\u306e\u4e00\u6b21\u95a2\u6570\u306f\u4ee5\u4e0b\u306e\u5f0f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(y=\\displaystyle\\frac{3}{4}x+2\\)<\/li>\n<\/ul>\n<p>\u307e\u305f\u306f\u3001\u4e00\u6b21\u95a2\u6570\u306e\u516c\u5f0f\u306b\u5ea7\u6a19\u3092\u5f53\u3066\u306f\u3081\u3066\u3082\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b0\u30e9\u30d5\u3088\u308a\u3001\\(b=2\\)\u3068\u65e2\u306b\u5206\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u5207\u7247\u306f\u5206\u304b\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u30b0\u30e9\u30d5\u306e\u5f0f\u306f\\(y=ax+2\\)\u3067\u3059\u3002\u3053\u3053\u306b\u3001\\((4,5)\\)\u307e\u305f\u306f\\((-4,-1)\\)\u306e\u5ea7\u6a19\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4f8b\u3048\u3070\\((-4,-1)\\)\u3092\u4ee3\u5165\u3059\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(-1=-4a+2\\)<\/p>\n<p>\\(4a=2+1\\)<\/p>\n<p>\\(4a=3\\)<\/p>\n<p>\\(a=\\displaystyle\\frac{3}{4}\\)<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u4e00\u6b21\u95a2\u6570\u306e\u516c\u5f0f\u304b\u3089\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<span style=\"color: #ff0000;\">\u5909\u5316\u306e\u5272\u5408\u306e\u516c\u5f0f\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/span>\u591a\u304f\u306e\u516c\u5f0f\u3092\u899a\u3048\u3088\u3046\u3068\u52aa\u529b\u3057\u3066\u3082\u5fd8\u308c\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u6700\u3082\u91cd\u8981\u306a\u516c\u5f0f\u3060\u3051\u3092\u899a\u3048\u3066\u3001\u7b54\u3048\u3092\u51fa\u305b\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>\u30fb\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u304b\u3089\u30b0\u30e9\u30d5\u3092\u66f8\u304f<\/strong><\/p>\n<p>\u30b0\u30e9\u30d5\u304b\u3089\u5f0f\u3092\u51fa\u3059\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u4e00\u65b9\u3067\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3068\u304d\u306f\u3069\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u4e00\u6b21\u95a2\u6570\u304b\u3089\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3082\u3001\u3084\u308a\u65b9\u306f\u540c\u3058\u3067\u3059\u3002\u50be\u304d\u304c\u5206\u6570\u3060\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u5909\u5316\u306e\u5272\u5408\u304b\u3089\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5f0f\u3067\u306f\u3069\u306e\u3088\u3046\u306b\u30b0\u30e9\u30d5\u3092\u66f8\u3051\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\\(y=-\\displaystyle\\frac{2}{3}x+2\\)<\/li>\n<\/ul>\n<p>\u5207\u7247\u306f2\u306a\u306e\u3067\u3001\\((0,2)\\)\u3092\u901a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\\(x\\)\u304c3\u5897\u3048\u305f\u3089\\(y\\)\u306f2\u6e1b\u308a\u307e\u3059\u3002\u3064\u307e\u308a\\(x=3\\)\u306e\u3068\u304d\u3001\\(y=0\\)\u3067\u3059\u3002\u76f4\u7dda\u306f\\((3,0)\\)\u3092\u901a\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2609\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/egth4.jpg\" alt=\"\" width=\"600\" height=\"471\" \/><\/p>\n<p>\u4e00\u6b21\u95a2\u6570\u306f\u524d\u8ff0\u306e\u901a\u308a\u30012\u3064\u306e\u5ea7\u6a19\u3092\u76f4\u7dda\u3067\u3064\u306a\u3050\u3053\u3068\u3067\u5b8c\u6210\u3057\u307e\u3059\u3002\u50be\u304d\u304c\u5206\u6570\u3067\u3042\u3063\u3066\u3082\u3001\u30b0\u30e9\u30d5\u306e\u66f8\u304d\u65b9\u306f\u540c\u3058\u3067\u3059\u3002<\/p>\n<h2>\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u5207\u7247\u3068\u5ea7\u6a19\u304b\u3089\u6c42\u3081\u308b<\/h2>\n<p>\u306a\u304a\u4e00\u6b21\u95a2\u6570\u306e\u554f\u984c\u3067\u306f\u3001\u30b0\u30e9\u30d5\u307e\u305f\u306f\u5ea7\u6a19\u304b\u3089\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u51fa\u3055\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u3001\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3044\u304f\u3064\u304b\u65b9\u6cd5\u304c\u3042\u308a\u3001\u6700\u3082\u7c21\u5358\u306a\u65b9\u6cd5\u3068\u3057\u3066\u306f\u5207\u7247\u3068\u5ea7\u6a19\u304b\u3089\u4e00\u6b21\u65b9\u7a0b\u5f0f\u3092\u6c42\u3081\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u554f\u984c\u6587\u306b\u3088\u3063\u3066\u306f\u3001\u5207\u7247\u306e\u5024\u304c\u65e2\u306b\u5206\u304b\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\\(b\\)\u306e\u5024\u3092\u4ee3\u5165\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u5ea7\u6a19\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u3001\\(x\\)\u3068\\(y\\)\u306e\u5024\u3082\u5206\u304b\u3063\u3066\u3044\u307e\u3059\u3002\\(x\\)\u3092\u4ee3\u5165\u3059\u308b\u3068\u3001\\(y\\)\u306e\u5024\u304c\u660e\u78ba\u306b\u6c7a\u307e\u308b\u306e\u304c\u4e00\u6b21\u95a2\u6570\u3067\u3059\u3002\u3069\u306e\\(x\\)\u3092\u4ee3\u5165\u3057\u305f\u3068\u3057\u3066\u3082\u3001\\(y\\)\u306e\u5024\u3092\u5c0e\u304d\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u5ea7\u6a19\u3092\u4ee3\u5165\u3059\u308b\u3068\u3001\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u5834\u5408\u306e\u4e00\u6b21\u95a2\u6570\u306f\u3069\u306e\u3088\u3046\u306a\u5f0f\u306b\u306a\u3063\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<ul>\n<li>\u5207\u7247\u306f1\uff1a\\(b=1\\)<\/li>\n<li>\u5ea7\u6a19\\((2,2)\\)\u3092\u901a\u308b<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2415\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew1.jpg\" alt=\"\" width=\"468\" height=\"224\" \/><\/p>\n<p><span style=\"color: #0000ff;\">\u5207\u7247\u304c1\u306a\u306e\u3067\u3001\u5f0f\u306f\\(y=ax+1\\)\u3067\u3059\u3002\u307e\u305f\u5ea7\u6a19\\((2,2)\\)\u3092\u901a\u308b\u305f\u3081\u3001\\(x=2\\)\u3068\\(y=2\\)\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002<\/span>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(2=2a+1\\)<\/p>\n<p>\\(-2a=1-2\\)<\/p>\n<p>\\(-2a=-1\\)<\/p>\n<p>\\(a=\\displaystyle\\frac{1}{2}\\)<\/p>\n<p>\u50be\u304d\u306f\\(a=\\displaystyle\\frac{1}{2}\\)\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4e00\u6b21\u65b9\u7a0b\u5f0f\u306e\u5f0f\u306f\\(y=\\displaystyle\\frac{1}{2}x+1\\)\u3067\u3059\u3002<\/p>\n<p>\u554f\u984c\u6587\u304b\u3089\u3001\u5207\u7247\u306f1\u3068\u65e2\u306b\u5206\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u306b\u5bfe\u3057\u3066\u3001\u4e00\u6b21\u95a2\u6570\u306e\u50be\u304d\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u5ea7\u6a19\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u3088\u3046\u306b\u50be\u304d\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30b0\u30e9\u30d5\u304b\u3089\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u6c42\u3081\u308b<\/h3>\n<p>\u306a\u304a\u3001\u30b0\u30e9\u30d5\u304b\u3089\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u51fa\u3055\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u30b0\u30e9\u30d5\u3092\u8aad\u307f\u89e3\u304f\u5834\u5408\u3001\u30b0\u30e9\u30d5\u306e\u5207\u7247\u3068\u5ea7\u6a19\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b0\u30e9\u30d5\u306e\u5207\u7247\u3068\u5ea7\u6a19\u306f\u3069\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2418\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew3.jpg\" alt=\"\" width=\"403\" height=\"414\" \/><\/p>\n<p>\\(y\\)\u5ea7\u6a19\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\u5207\u7247\u306f1\u3067\u3059\u3002\u307e\u305f\u30b0\u30e9\u30d5\u304b\u3089\u3001\u4efb\u610f\u306e\u5ea7\u6a19\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u3069\u306e\u5ea7\u6a19\u3092\u4ee3\u5165\u3057\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u6570\u5b66\u3067\u306f\u3001\u8a08\u7b97\u30df\u30b9\u3092\u306a\u304f\u3059\u305f\u3081\u306b\u7c21\u5358\u306a\u5ea7\u6a19\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u4eca\u56de\u306f\\((1,-1)\\)\u306e\u5ea7\u6a19\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b0\u30e9\u30d5\u3088\u308a\u3001\u5207\u7247\u306f1\u306a\u306e\u3067\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u306f\\(y=ax+1\\)\u3067\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u4e00\u6b21\u95a2\u6570\u306f\\((1,-1)\\)\u306e\u5ea7\u6a19\u3092\u901a\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\\(x=1\\)\u3068\\(y=-1\\)\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u8a08\u7b97\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(-1=a+1\\)<\/p>\n<p>\\(-a=1+1\\)<\/p>\n<p>\\(-a=2\\)<\/p>\n<p>\\(a=-2\\)<\/p>\n<p>\u50be\u304d\u306f-2\u306a\u306e\u3067\u3001\\(y=-2x+1\\)\u306e\u5f0f\u306b\u306a\u308a\u307e\u3059\u3002<span style=\"color: #0000ff;\">\u30b0\u30e9\u30d5\u304b\u3089\u5207\u7247\u3084\u5ea7\u6a19\u3092\u8aad\u307f\u89e3\u304f\u5fc5\u8981\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u306e\u51fa\u3057\u65b9\u306f\u540c\u3058\u3067\u3059\u3002<\/span><\/p>\n<p>\u306a\u304a\u30b0\u30e9\u30d5\u3092\u8aad\u307f\u89e3\u304f\u5834\u5408\u3001\u5909\u5316\u306e\u5272\u5408\u304b\u3089\\(a\\)\u3092\u8a08\u7b97\u3057\u3066\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u5148\u307b\u3069\u306e\u30b0\u30e9\u30d5\u3067\u3042\u308c\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\\(x\\)\u306e\u5024\u304c1\u5897\u3048\u308b\u3054\u3068\u306b\u3001\\(y\\)\u306e\u5024\u306f-2\u5897\u3048\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5909\u5316\u306e\u5272\u5408\u306f-2\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2419\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew4.jpg\" alt=\"\" width=\"402\" height=\"436\" \/><\/p>\n<p>\u5909\u5316\u306e\u5272\u5408\u306f\u50be\u304d\u3068\u540c\u3058\u3067\u3059\u3002\u305d\u3053\u3067\u5207\u7247\u3068\u50be\u304d\u304b\u3089\u3001\\(y=-2x+1\\)\u306e\u5f0f\u306b\u306a\u308b\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h3>\u9023\u7acb\u65b9\u7a0b\u5f0f\u3067\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u8a08\u7b97\u3059\u308b<\/h3>\n<p>\u4e00\u65b9\u3067\u30b0\u30e9\u30d5\u3092\u63d0\u793a\u3055\u308c\u305a\u3001\u5207\u7247\u3082\u5206\u304b\u3089\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u5206\u304b\u3063\u3066\u3044\u308b\u306e\u306f2\u3064\u306e\u5ea7\u6a19\u3060\u3051\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e2\u3064\u306e\u5ea7\u6a19\u3060\u3051\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3067\u3059\u3002<\/p>\n<ul>\n<li>\\((-6,-7)\\)<\/li>\n<li>\\((3,-1)\\)<\/li>\n<\/ul>\n<p>\u3053\u306e\u5834\u5408\u3001\u3069\u306e\u3088\u3046\u306b\u3059\u308c\u3070\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u3001<span style=\"color: #ff0000;\">\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span>\u5206\u304b\u3089\u306a\u3044\u6570\u5b57\u304c2\u3064\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u30012\u3064\u306e\u5f0f\u3092\u4f5c\u308b\u3053\u3068\u3067\u3001\u6570\u5b57\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u304c\u9023\u7acb\u65b9\u7a0b\u5f0f\u3067\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\\((-6,-7)\\)\u3068\\((3,-1)\\)\u3092\\(y=ax+b\\)\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{eqnarray} \\left\\{\\begin{array}{l}-7=-6a+b\\\\-1=3a+b\\end{array}\\right.\\end{eqnarray}\\)<\/p>\n<p>\u3053\u308c\u3092\u9023\u7acb\u65b9\u7a0b\u5f0f\u3067\u89e3\u3044\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{array}{r}-7=-6a+b\\\\\\underline{-)\\phantom{0}-1=3a+b}\\\\-6=-9a\\\\a=\\displaystyle\\frac{2}{3}\\end{array}\\)<\/p>\n<p>\u9023\u7acb\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u3001\u3053\u306e\u3088\u3046\u306b\\(a=\\displaystyle\\frac{2}{3}\\)\u3068\u5206\u304b\u308a\u307e\u3059\u3002\u307e\u305f\\(a=\\displaystyle\\frac{2}{3}\\)\u3092\u4ee3\u5165\u3057\u3066\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u3053\u3068\u3067\u3001\\(b=-3\\)\u3068\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\\((3,-1)\\)\u3092\u4ee3\u5165\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(-1=3\u00d7\\displaystyle\\frac{2}{3}+b\\)<\/p>\n<p>\\(-1=2+b\\)<\/p>\n<p>\\(b=-3\\)<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\\(y=\\displaystyle\\frac{2}{3}x-3\\)\u3067\u3059\u3002\u30b0\u30e9\u30d5\u304c\u63d0\u793a\u3055\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u30012\u3064\u306e\u5ea7\u6a19\u304c\u5206\u304b\u308c\u3070\u9023\u7acb\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u4e00\u6b21\u95a2\u6570\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u4e00\u6b21\u95a2\u6570\u3092\u4f7f\u3046\u3001\u5ea7\u6a19\u306e\u4ea4\u70b9\u306e\u6c42\u3081\u65b9<\/h2>\n<p>\u306a\u304a\u3001\u4e00\u6b21\u95a2\u6570\u306e\u5fdc\u7528\u554f\u984c\u3068\u3057\u3066\u4ea4\u70b9\u304c\u3042\u308a\u307e\u3059\u30022\u3064\u306e\u4e00\u6b21\u95a2\u6570\u306e\u4ea4\u70b9\u3092\u554f\u308f\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308b\u306e\u3067\u3059\u3002\u4ea4\u70b9\u306f\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u51fa\u305b\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e2\u3064\u306e\u5f0f\u306e\u4ea4\u70b9P\u3092\u6c42\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\\(y=-2x-2\\)<\/li>\n<li>\\(y=x+2\\)<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2421\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew5.jpg\" alt=\"\" width=\"600\" height=\"616\" \/><\/p>\n<p>2\u3064\u306e\u5f0f\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5024\u3092\u51fa\u3059\u306e\u304c\u9023\u7acb\u65b9\u7a0b\u5f0f\u3067\u3059\u3002\u305d\u3053\u3067\u3001\\(y=-2x-2\\)\u3068\\(y=x+2\\)\u306e\u5f0f\u3092\u4f7f\u3063\u3066\u4ee5\u4e0b\u306e\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304d\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u3001\u4ea4\u70b9\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{eqnarray} \\left\\{\\begin{array}{l}y=-2x-2\\\\y=x+2\\end{array}\\right.\\end{eqnarray}\\)<\/p>\n<p>\u306a\u305c\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3048\u3070\u4ea4\u70b9\u3092\u51fa\u305b\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<span style=\"color: #0000ff;\">\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3046\u3068\u3044\u3046\u306e\u306f\u3001\u300c\\(y=-2x-2\\)\u304b\u3064\\(y=x+2\\)\u3092\u6e80\u305f\u3059\\(x\\)\u3068\\(y\\)\u306e\u5024\u3092\u51fa\u3059\u300d\u3053\u3068\u3068\u610f\u5473\u304c\u540c\u3058\u3067\u3059\u3002<\/span>\u307e\u305f2\u3064\u306e\u5f0f\u3092\u6e80\u305f\u3059\\(x\\)\u3068\\(y\\)\u3092\u8a08\u7b97\u3059\u308b\u306e\u306f\u3001\u4ea4\u70b9\u3092\u51fa\u3059\u306e\u3068\u610f\u5473\u304c\u540c\u3058\u3067\u3059\u3002<\/p>\n<p>\u524d\u8ff0\u306e\u901a\u308a\u30012\u3064\u306e\u5206\u304b\u3089\u306a\u3044\u6570\u5b57\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3048\u3070\u6570\u5b57\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3053\u3067\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{array}{r}y=-2x-2\\\\\\underline{-)\\phantom{0}\\phantom{0}y=x+2}\\\\0=-3x-4\\\\3x=-4\\\\x=-\\displaystyle\\frac{4}{3}\\end{array}\\)<\/p>\n<p>\u6b21\u306b\u3001\\(x=-\\displaystyle\\frac{4}{3}\\)\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\\(y=x+2\\)\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(y=-\\displaystyle\\frac{4}{3}+2\\)<\/p>\n<p>\\(y=-\\displaystyle\\frac{4}{3}+\\displaystyle\\frac{6}{3}\\)<\/p>\n<p>\\(y=\\displaystyle\\frac{2}{3}\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\u3001\u70b9P\u306e\u5ea7\u6a19\u304c\\(\\left(-\\displaystyle\\frac{4}{3},\\displaystyle\\frac{2}{3}\\right)\\)\u3068\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2>\u7df4\u7fd2\u554f\u984c\uff1a\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u3068\u6587\u7ae0\u984c<\/h2>\n<p><strong>Q1.<\/strong>\u00a0\u6b21\u306e\u554f\u984c\u3092\u89e3\u304d\u307e\u3057\u3087\u3046<\/p>\n<ol style=\"list-style-type: lower-alpha;\">\n<li>(1)\u306e\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u6c42\u3081\u307e\u3057\u3087\u3046<\/li>\n<li>(2)\u306e\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u3092\u6c42\u3081\u307e\u3057\u3087\u3046<\/li>\n<li>(1)\u3068(2)\u306e\u4ea4\u70b9\u3092\u6c42\u3081\u307e\u3057\u3087\u3046<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2430\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew6.jpg\" alt=\"\" width=\"423\" height=\"434\" \/><\/p>\n<p><strong>A1.<\/strong>\u00a0\u89e3\u7b54<\/p>\n<p><strong>(a)<\/strong><\/p>\n<p>\u30b0\u30e9\u30d5\u304b\u3089\u4e00\u6b21\u65b9\u7a0b\u5f0f\u3092\u6c42\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u5207\u7247\u306b\u7740\u76ee\u3057\u307e\u3057\u3087\u3046\u3002(1)\u306e\u5f0f\u3067\u306f\u3001\u5207\u7247\u306f4\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\(b=4\\)\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001(1)\u306f\\((1,2)\\)\u306e\u5ea7\u6a19\u3092\u901a\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001\\(y=ax+4\\)\u306b\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(2=a+4\\)<\/p>\n<p>\\(a=-2\\)<\/p>\n<p>\u50be\u304d\u304c-2\u3068\u5206\u304b\u308a\u307e\u3057\u305f\u3002\u305d\u306e\u305f\u3081\u3001(1)\u306e\u5f0f\u306f\\(y=-2x+4\\)\u3067\u3059\u3002<\/p>\n<p><strong>(b)<\/strong><\/p>\n<p>\u30b0\u30e9\u30d5\u3092\u898b\u3066\u3082\u3001(2)\u306e\u5207\u7247\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u30012\u3064\u306e\u5ea7\u6a19\u304b\u3089(2)\u306e\u5f0f\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002\u4efb\u610f\u306e(2)\u306e\u5ea7\u6a19\u3092\u9078\u3073\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001(2)\u306f\u4ee5\u4e0b\u306e\u5ea7\u6a19\u3092\u901a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\((2,3)\\)<\/li>\n<li>\\((5,4)\\)<\/li>\n<\/ul>\n<p>\u305d\u3053\u3067\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u50be\u304d\u3068\u5207\u7247\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002\\(y=ax+b\\)\u306e\u516c\u5f0f\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{eqnarray} \\left\\{\\begin{array}{l}3=2a+b\\\\4=5a+b\\end{array}\\right.\\end{eqnarray}\\)<\/p>\n<p>\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{array}{r}3=2a+b\\\\\\underline{-)\\phantom{0}4=5a+b}\\\\-1=&#8211;3a\\\\a=\\displaystyle\\frac{1}{3}\\end{array}\\)<\/p>\n<p>\u307e\u305f\\(a=\\displaystyle\\frac{1}{3}\\)\u3092\\(3=2a+b\\)\u306b\u4ee3\u5165\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(3=2\u00d7\\displaystyle\\frac{1}{3}+b\\)<\/p>\n<p>\\(\\displaystyle\\frac{9}{3}=\\displaystyle\\frac{2}{3}+b\\)<\/p>\n<p>\\(b=\\displaystyle\\frac{7}{3}\\)<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001(2)\u306e\u5f0f\u306f\\(y=\\displaystyle\\frac{1}{3}x+\\displaystyle\\frac{7}{3}\\)\u3067\u3059\u3002<\/p>\n<p><strong>(c)<\/strong><\/p>\n<p>2\u3064\u306e\u5f0f\u306e\u4ea4\u70b9\u3092\u51fa\u3059\u305f\u3081\u306b\u306f\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u89e3\u304d\u307e\u3057\u3087\u3046\u3002(1)\u3068(2)\u306e\u4e00\u6b21\u95a2\u6570\u3092\u51fa\u3057\u305f\u306e\u3067\u3001\u3053\u306e2\u3064\u306e\u5f0f\u3092\u4f7f\u3063\u3066\u4ee5\u4e0b\u306e\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n<p>\\(\\begin{eqnarray} \\left\\{\\begin{array}{l}y=-2x+4\\\\y=\\displaystyle\\frac{1}{3}x+\\displaystyle\\frac{7}{3}\\end{array}\\right.\\end{eqnarray}\\)<\/p>\n<p>\u4ee3\u5165\u6cd5\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(-2x+4=\\displaystyle\\frac{1}{3}x+\\displaystyle\\frac{7}{3}\\)<\/p>\n<p>\\((-2x+4)\\color{red}{\u00d73}=\\left(\\displaystyle\\frac{1}{3}x+\\displaystyle\\frac{7}{3}\\right)\\color{red}{\u00d73}\\)<\/p>\n<p>\\(-6x+12=x+7\\)<\/p>\n<p>\\(-6x-x=7-12\\)<\/p>\n<p>\\(-7x=-5\\)<\/p>\n<p>\\(x=\\displaystyle\\frac{5}{7}\\)<\/p>\n<p>\u6b21\u306b\u3001\\(y=-2x+4\\)\u306b\u5bfe\u3057\u3066\\(x=\\displaystyle\\frac{5}{7}\\)\u3092\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\\(y=-2\u00d7\\displaystyle\\frac{5}{7}+4\\)<\/p>\n<p>\\(y=-\\displaystyle\\frac{10}{7}+\\displaystyle\\frac{28}{7}\\)<\/p>\n<p>\\(y=\\displaystyle\\frac{18}{7}\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\u3001(1)\u3068(2)\u306e\u4ea4\u70b9\u306f\\(\\left(\\displaystyle\\frac{5}{7},\\displaystyle\\frac{18}{7}\\right)\\)\u3068\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<hr \/>\n<p><strong>Q2.<\/strong>\u00a0\u6b21\u306e\u554f\u984c\u3092\u89e3\u304d\u307e\u3057\u3087\u3046<\/p>\n<p>AB=10cm\u3001BC=6cm\u3001\u2220ABC=90\u00b0\u306e\u4e09\u89d2\u5f62\u304c\u3042\u308a\u307e\u3059\u3002\u70b9P\u306fA\u3092\u51fa\u767a\u3057\u3001\u6bce\u79d21cm\u306e\u901f\u3055\u3067B\u3092\u901a\u308a\u3001C\u306b\u5411\u304b\u3044\u307e\u3059\u3002\u70b9P\u304cA\u3092\u51fa\u767a\u3057\u3066\\(x\\)\u79d2\u5f8c\u3001\u25b3APC\u306e\u9762\u7a4d\u3092\\(y\\)cm<sup>2<\/sup>\u3068\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2463\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew7.jpg\" alt=\"\" width=\"508\" height=\"258\" \/><\/p>\n<ol style=\"list-style-type: lower-alpha;\">\n<li>8\u79d2\u5f8c\u306e\u25b3APC\u306e\u9762\u7a4d\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046<\/li>\n<li>\\(x\\)\u306e\u5909\u57df\u3068\\(y\\)\u306e\u5909\u57df\u306b\u3064\u3044\u3066\u3001\u4e0d\u7b49\u53f7\u3092\u4f7f\u3063\u3066\u8868\u3057\u307e\u3057\u3087\u3046<\/li>\n<li>\u70b9P\u304cBC\u4e0a\u306b\u3042\u308b\u3068\u304d\u3001\\(x\\)\u3068\\(y\\)\u306e\u95a2\u4fc2\u3092\u5f0f\u306b\u3057\u307e\u3057\u3087\u3046<\/li>\n<\/ol>\n<p><strong>A2.<\/strong>\u00a0\u89e3\u7b54<\/p>\n<p><strong>(a)<\/strong><\/p>\n<p>8\u79d2\u5f8c\u3067\u306f\u3001AP\u306e\u9577\u3055\u306f8cm\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u4e09\u89d2\u5f62\u306e\u6a2a\u306e\u9577\u3055\u306f8cm\u3067\u3059\u3002\u4e00\u65b9\u3067\u305f\u3066\u306e\u9577\u3055\u306f6cm\u3067\u3059\u3002\u4e09\u89d2\u5f62\u306e\u9762\u7a4d\u306e\u516c\u5f0f\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u4e09\u89d2\u5f62\u306e\u9762\u7a4d = \u305f\u3066 \u00d7 \u6a2a \u00d7 \\(\\displaystyle\\frac{1}{2}\\)<\/li>\n<\/ul>\n<p>\u305d\u306e\u305f\u3081\u3001\u4e09\u89d2\u5f62\u306e\u9762\u7a4d\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(8\u00d76\u00d7\\displaystyle\\frac{1}{2}=24\\)<\/li>\n<\/ul>\n<p>\u7b54\u3048\u306f24cm<sup>2<\/sup>\u3067\u3059\u3002<\/p>\n<p><strong>(b)<\/strong><\/p>\n<p>AB\u3068BC\u306e\u9577\u3055\u306e\u5408\u8a08\u306f16cm\u3067\u3059\u3002\u70b9P\u306f\u6bce\u79d21cm\u9032\u3080\u305f\u3081\u300116\u79d2\u5f8c\u306bC\u306b\u5230\u7740\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\\(x\\)\u306e\u5909\u57df\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(0\u2266x\u226616\\)<\/li>\n<\/ul>\n<p>\u4e00\u65b9\u3067\u25b3APC\u306e\u9762\u7a4d\u3067\u306f\u3001\u70b9P\u304cB\u306b\u5230\u7740\u3057\u305f\u3068\u304d\u3001\u9762\u7a4d\u304c\u6700\u5927\u306b\u306a\u308a\u307e\u3059\u3002\u70b9P\u304cBC\u4e0a\u3092\u9032\u3080\u3068\u304d\u3001\u25b3APC\u306e\u9762\u7a4d\u306f\u5c11\u306a\u304f\u306a\u308b\u304b\u3089\u3067\u3059\u3002\u25b3ABC\u306e\u9762\u7a4d\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(10\u00d76\u00d7\\displaystyle\\frac{1}{2}=30\\)<\/li>\n<\/ul>\n<p>\u305d\u306e\u305f\u3081\u3001\\(y\\)\u306e\u5909\u57df\u306f\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\\(0\u2266y\u226630\\)<\/li>\n<\/ul>\n<p><strong>(c)<\/strong><\/p>\n<p>\u70b9P\u304cBC\u4e0a\u306b\u3042\u308b\u3068\u304d\u3001\u6a2a\u306e\u9577\u3055\u306f10cm\u3067\u56fa\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u3067\u3001\u305f\u3066\u306e\u9577\u3055\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u305f\u3066\u306e\u9577\u3055\uff08CP\u306e\u9577\u3055\uff09\u3092\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308c\u3070\u3001\u25b3APC\u306e\u9762\u7a4d\u3092\u8868\u3059\u5f0f\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2467\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew8.jpg\" alt=\"\" width=\"535\" height=\"263\" \/><\/p>\n<p>\u305d\u308c\u3067\u306f\u3001\u3069\u306e\u3088\u3046\u306b\u3057\u3066CP\u306e\u9577\u3055\u3092\u8003\u3048\u308c\u3070\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u4e09\u89d2\u5f62\u306e\u72b6\u614b\u3067\u8003\u3048\u308b\u3068\u96e3\u3057\u3044\u3067\u3059\u3002\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u76f4\u7dda\u306b\u3057\u3066CP\u306e\u9577\u3055\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2468\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2020\/11\/fcjrew9.jpg\" alt=\"\" width=\"600\" height=\"147\" 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