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The line P Q whose equation is x-y=2 cut...

The line `P Q` whose equation is `x-y=2` cuts the x-axis at `P` ,and `Q` is (4,2). The line `P Q` is rotated about `P` through `45^@` in the anticlockwise direction. The equation of the line `P Q` in the new position is (A) `y=-sqrt(2)` (B) `y=2` (C) `x=2` (D) `x=-2`

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