010x的知识精选

与一对平行线5x-2y-6=0,10x-4y+3=0等距离的点的轨迹方程是(  )A.20x-8y-9=0  ...
问题详情:与一对平行线5x-2y-6=0,10x-4y+3=0等距离的点的轨迹方程是()A.20x-8y-9=0                      B.10x-4y-5=0C.5x-2y-3=0                       D.15x-6y-11=0【回答】A[解析]5x-2y-6...
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