要自己做的如图,四边形ABCD是一正方形,已知A(1,2),B(5,2) (1)求点C,D的坐标; (2)若一次函数y=kx-2(k≠0)的图象过C点,求k的值. (3)若y=kx-2的直线与x轴、y轴分别交于M,N两点,且△CMN
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![要自己做的如图,四边形ABCD是一正方形,已知A(1,2),B(5,2) (1)求点C,D的坐标; (2)若一次函数y=kx-2(k≠0)的图象过C点,求k的值. (3)若y=kx-2的直线与x轴、y轴分别交于M,N两点,且△CMN](/uploads/image/z/3015796-4-6.jpg?t=%E8%A6%81%E8%87%AA%E5%B7%B1%E5%81%9A%E7%9A%84%E5%A6%82%E5%9B%BE%2C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E6%98%AF%E4%B8%80%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E5%B7%B2%E7%9F%A5A%EF%BC%881%2C2%EF%BC%89%2CB%EF%BC%885%2C2%EF%BC%89+%EF%BC%881%EF%BC%89%E6%B1%82%E7%82%B9C%2CD%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%9B+%EF%BC%882%EF%BC%89%E8%8B%A5%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dkx-2%EF%BC%88k%E2%89%A00%EF%BC%89%E7%9A%84%E5%9B%BE%E8%B1%A1%E8%BF%87C%E7%82%B9%2C%E6%B1%82k%E7%9A%84%E5%80%BC%EF%BC%8E+%EF%BC%883%EF%BC%89%E8%8B%A5y%3Dkx-2%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%B8%8Ex%E8%BD%B4%E3%80%81y%E8%BD%B4%E5%88%86%E5%88%AB%E4%BA%A4%E4%BA%8EM%2CN%E4%B8%A4%E7%82%B9%2C%E4%B8%94%E2%96%B3CMN)
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