x=ρcosθ

=4cos^2θ/sin^2θ

=4cot^2θ

y=ρsinθ

=4cosθ/sinθ

=4cotθ

cotθ=y/4

x=4(y/4)^2

The Cartesian Coordinate Equation of C: Y 2 = 4x

L:x=-√2/2t

√2/2t=-x

y= 1+√2/2t

= 1+(-x)

General equation of l: y= 1-x