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证明动直线过定点,是一类典型问题,高考中时有出现.现摘选若干高考题,说明求解方法.一、利用过同一点的两条直线的斜率相等
Prove moving over a fixed point, is a typical type of problem, the college entrance examination there are now selected a number of college entrance examination questions, explain the solution method. First, using the same point of the two straight lines of equal slope