.The line PQ whose equation is x - y = 2 cuts the x-axis at
P, and Q is (4,2). The line PQ is rotated about P through
45° in the anticlockwise direction. The equation of the line
PQ in the new position is
(1) y=-√2
(2) y = 2
(3) x = 2
(4) x = -2
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Answer:
x=2
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