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(2002•益阳)在平面直角坐标系中,点P(3,-4)关于y轴对称的点P′的坐标...
(2002•益阳)在平面直角坐标系中,点P(3,-4)关于y轴对称的点P′的坐标为( )
A.(-3,-4)
B.(-3,4)
C.(3,4)
D.(-4,3)
考点分析:
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