①已知y是x的一次函数且点(-1,2)(3,5)在图象上,求改一次函数的表达式②已知一次函数的图象过(0,1)(2,-1)且M(m,1/2)在该图象上求m的值.③已知一次函数y=(m-3)x+2m+4的图象过直
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![①已知y是x的一次函数且点(-1,2)(3,5)在图象上,求改一次函数的表达式②已知一次函数的图象过(0,1)(2,-1)且M(m,1/2)在该图象上求m的值.③已知一次函数y=(m-3)x+2m+4的图象过直](/uploads/image/z/1125785-65-5.jpg?t=%E2%91%A0%E5%B7%B2%E7%9F%A5y%E6%98%AFx%E7%9A%84%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E4%B8%94%E7%82%B9%EF%BC%88-1%2C2%EF%BC%89%EF%BC%883%2C5%EF%BC%89%E5%9C%A8%E5%9B%BE%E8%B1%A1%E4%B8%8A%2C%E6%B1%82%E6%94%B9%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%E2%91%A1%E5%B7%B2%E7%9F%A5%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E5%9B%BE%E8%B1%A1%E8%BF%87%EF%BC%880%2C1%EF%BC%89%EF%BC%882%2C-1%EF%BC%89%E4%B8%94M%EF%BC%88m%2C1%2F2%EF%BC%89%E5%9C%A8%E8%AF%A5%E5%9B%BE%E8%B1%A1%E4%B8%8A%E6%B1%82m%E7%9A%84%E5%80%BC.%E2%91%A2%E5%B7%B2%E7%9F%A5%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0y%EF%BC%9D%EF%BC%88m-3%EF%BC%89x%EF%BC%8B2m%EF%BC%8B4%E7%9A%84%E5%9B%BE%E8%B1%A1%E8%BF%87%E7%9B%B4)
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