题目

Having too many friends is not always good. Maybe we should ________ a smaller, but closer group of friends. A . begin with B . stick to C . care for 答案:B15.如图,x轴上两个点A(-4,0),B(2,0),直线l经过点E(4,0),M为直线l上的动点,当以A、B、M为顶点所作的直角三角形有且只有三个时,求直线l的解析式.
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