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Let (2,-1) be the point P and x- y + 1 =...

Let `(2,-1)` be the point P and `x- y + 1 =0` be the straight line l. If `Q` is image of point P about line, that image of point Q about y-axis is

A

`(-2,3)`

B

(2,3)

C

(3,4)

D

(-3,4)

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The correct Answer is:
A
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