一次函数的问题!1.已知点(a,-2)在直线y=-2x-3上,则a=( )2.一次函数y=(a-1)x+5,y随x的曾大而减小,则a的范围是( )3.求直线y=x+1与直线y=-x+1的交点4.直线y=(2a-3)x+(2-a)不过第二象限,求a的范围
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![一次函数的问题!1.已知点(a,-2)在直线y=-2x-3上,则a=( )2.一次函数y=(a-1)x+5,y随x的曾大而减小,则a的范围是( )3.求直线y=x+1与直线y=-x+1的交点4.直线y=(2a-3)x+(2-a)不过第二象限,求a的范围](/uploads/image/z/14604496-16-6.jpg?t=%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E9%97%AE%E9%A2%98%211.%E5%B7%B2%E7%9F%A5%E7%82%B9%28a%2C-2%29%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3D-2x-3%E4%B8%8A%2C%E5%88%99a%3D%EF%BC%88+%EF%BC%892.%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0y%3D%EF%BC%88a-1%EF%BC%89x%2B5%2Cy%E9%9A%8Fx%E7%9A%84%E6%9B%BE%E5%A4%A7%E8%80%8C%E5%87%8F%E5%B0%8F%2C%E5%88%99a%E7%9A%84%E8%8C%83%E5%9B%B4%E6%98%AF%EF%BC%88+%EF%BC%893.%E6%B1%82%E7%9B%B4%E7%BA%BFy%3Dx%2B1%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3D-x%2B1%E7%9A%84%E4%BA%A4%E7%82%B94.%E7%9B%B4%E7%BA%BFy%3D%EF%BC%882a-3%EF%BC%89x%2B%EF%BC%882-a%EF%BC%89%E4%B8%8D%E8%BF%87%E7%AC%AC%E4%BA%8C%E8%B1%A1%E9%99%90%2C%E6%B1%82a%E7%9A%84%E8%8C%83%E5%9B%B4)
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