摘要: 解:(1)符合条件的点的坐标分别是 ...··············································································· 3分 (2)①选择点时.设直线的解析式为.···································· 4分 由题意得 解得·········································································· 6分 直线的解析式为.············································································ 7分 ②选择点时.类似①的求法.可得 直线的解析式为.················································································· 7分 ③选择点时.类似①的求法.可得直线的解析式为.············ 7分

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