已知四条直线y=kx-3,y=-1,y=3和x=1所围成的四边形的面积是12,则k的值为( ) A.1或-2 B.2或已知四条直线y=kx-3,y=-1,y=3和x=1所围成的四边形的面积是12,则k的值为( )A.1或-2 B.2或-1 C.3 D
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![已知四条直线y=kx-3,y=-1,y=3和x=1所围成的四边形的面积是12,则k的值为( ) A.1或-2 B.2或已知四条直线y=kx-3,y=-1,y=3和x=1所围成的四边形的面积是12,则k的值为( )A.1或-2 B.2或-1 C.3 D](/uploads/image/z/10594370-2-0.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9B%9B%E6%9D%A1%E7%9B%B4%E7%BA%BFy%3Dkx-3%2Cy%3D-1%2Cy%3D3%E5%92%8Cx%3D1%E6%89%80%E5%9B%B4%E6%88%90%E7%9A%84%E5%9B%9B%E8%BE%B9%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF12%2C%E5%88%99k%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88+%EF%BC%89+A%EF%BC%8E1%E6%88%96-2+B%EF%BC%8E2%E6%88%96%E5%B7%B2%E7%9F%A5%E5%9B%9B%E6%9D%A1%E7%9B%B4%E7%BA%BFy%3Dkx-3%EF%BC%8Cy%3D-1%EF%BC%8Cy%3D3%E5%92%8Cx%3D1%E6%89%80%E5%9B%B4%E6%88%90%E7%9A%84%E5%9B%9B%E8%BE%B9%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF12%EF%BC%8C%E5%88%99k%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88%E3%80%80%E3%80%80%EF%BC%89A%EF%BC%8E1%E6%88%96-2+B%EF%BC%8E2%E6%88%96-1+C%EF%BC%8E3+D)
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