1.一次函数图像过点(-1,2)又与y=1/2x-3交于y轴上同一点,求一次函数的表达式.2.一次图像过点(-1,2)又与y=1/2x-3交于x轴上同一点,求一次函数的表达式.3.已知直线y=2x+b与两坐标围城的面积为四,求此
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![1.一次函数图像过点(-1,2)又与y=1/2x-3交于y轴上同一点,求一次函数的表达式.2.一次图像过点(-1,2)又与y=1/2x-3交于x轴上同一点,求一次函数的表达式.3.已知直线y=2x+b与两坐标围城的面积为四,求此](/uploads/image/z/5125358-38-8.jpg?t=1.%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%E8%BF%87%E7%82%B9%28-1%2C2%29%E5%8F%88%E4%B8%8Ey%3D1%2F2x-3%E4%BA%A4%E4%BA%8Ey%E8%BD%B4%E4%B8%8A%E5%90%8C%E4%B8%80%E7%82%B9%2C%E6%B1%82%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F.2.%E4%B8%80%E6%AC%A1%E5%9B%BE%E5%83%8F%E8%BF%87%E7%82%B9%28-1%2C2%29%E5%8F%88%E4%B8%8Ey%3D1%2F2x-3%E4%BA%A4%E4%BA%8Ex%E8%BD%B4%E4%B8%8A%E5%90%8C%E4%B8%80%E7%82%B9%2C%E6%B1%82%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F.3.%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFy%3D2x%2Bb%E4%B8%8E%E4%B8%A4%E5%9D%90%E6%A0%87%E5%9B%B4%E5%9F%8E%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA%E5%9B%9B%2C%E6%B1%82%E6%AD%A4)
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