The line `P Q`
whose equation is `x-y=2`
cuts the x-axis at `P ,a n dQ`
is (4,2). The line `P Q`
is rotated about `P`
through `45^0`
in the anticlockwise direction. The equation of the line `P Q`
in the new position is
`y=-sqrt(2)`
(b) `y=2`
`x=2`
(d) `x=-2`
A. `y=-sqrt(2)`
B. y=2
C. x=2
D. x=-2
