Question

Let the curve C be the mirror image of the parabola y² = 4x with respect to the line x + y + 4 = 0. If A and B are the points of intersection of C with the line y = – 5, then the distance between A and B is

Answer 1

let P(t², 2t) be a point on the curve y² = 4x and Q(h, k) be it's image in x + y + 4 = 0