Answer to Question #314909 in Math for math student

Question

A 2D light ray is sent from point 𝑃 = (1, −1). It is reflected off a surface (represented by a line) at 𝑅 = (6,11), and reaches a receiver point at 𝑄 = (25,13 2 17) . Note that light rays hitting a surface reflect in a direction which is symmetric according to the normal. a) Find the implicit representation of the surface such that its “up” is towards 𝑃 (i.e. it faces the incoming ray). b) Find the angle between the ray and the surface.