直角坐标系中,一次函数y=kx=+b的图像经过三点A(2,0),B(0,2),C(m,3),求这个函数的表达式及m的值
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![直角坐标系中,一次函数y=kx=+b的图像经过三点A(2,0),B(0,2),C(m,3),求这个函数的表达式及m的值](/uploads/image/z/2537576-8-6.jpg?t=%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dkx%3D%2Bb%E7%9A%84%E5%9B%BE%E5%83%8F%E7%BB%8F%E8%BF%87%E4%B8%89%E7%82%B9A%EF%BC%882%2C0%EF%BC%89%2CB%EF%BC%880%2C2%29%2CC%EF%BC%88m%2C3%EF%BC%89%2C%E6%B1%82%E8%BF%99%E4%B8%AA%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%8F%8Am%E7%9A%84%E5%80%BC)
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