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根據題意畫出圖形,找出點N關於y軸的對稱點N′,連接MN′,與y軸交點為所求的點P,∵N(1,-1),∴N′(-1,-1),設直線MN′的解析式為y=kx+b,把M(3,2),N′(-1,-1)代入得:3k+b=2−k+b=−1,解得k=34b…
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