1.直线y=-x+3沿着x轴平移后经过点(2,-1),则平移后直线的解析式为____,直线沿x平移了____个单位.2.直线m与直线y=2x-3的交点横坐标为2,与直线y=-x-1交点的纵坐标为-1,求m的解析式(要过程)
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![1.直线y=-x+3沿着x轴平移后经过点(2,-1),则平移后直线的解析式为____,直线沿x平移了____个单位.2.直线m与直线y=2x-3的交点横坐标为2,与直线y=-x-1交点的纵坐标为-1,求m的解析式(要过程)](/uploads/image/z/3579669-45-9.jpg?t=1.%E7%9B%B4%E7%BA%BFy%3D-x%2B3%E6%B2%BF%E7%9D%80x%E8%BD%B4%E5%B9%B3%E7%A7%BB%E5%90%8E%E7%BB%8F%E8%BF%87%E7%82%B9%EF%BC%882%2C-1%EF%BC%89%2C%E5%88%99%E5%B9%B3%E7%A7%BB%E5%90%8E%E7%9B%B4%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%E4%B8%BA____%2C%E7%9B%B4%E7%BA%BF%E6%B2%BFx%E5%B9%B3%E7%A7%BB%E4%BA%86____%E4%B8%AA%E5%8D%95%E4%BD%8D.2.%E7%9B%B4%E7%BA%BFm%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3D2x-3%E7%9A%84%E4%BA%A4%E7%82%B9%E6%A8%AA%E5%9D%90%E6%A0%87%E4%B8%BA2%2C%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3D-x-1%E4%BA%A4%E7%82%B9%E7%9A%84%E7%BA%B5%E5%9D%90%E6%A0%87%E4%B8%BA-1%2C%E6%B1%82m%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%88%E8%A6%81%E8%BF%87%E7%A8%8B%EF%BC%89)
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