PointHard
Question
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 45o in the anticlockwise direction. The equation of the line PQ in the new position is -
Options
A.y = - √2
B.y = 2
C.x = 2
D.x = - 2
Solution
mPQ =
= 1Now, PQ is rotated through 45o about P in anticlockwise direction
slope of PQ becomes infinity.
Equation of PQ in new position is x = 2
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