Please answer the full question (both parts) with steps and explanation, thank you!

(p is rotation and sigma is reflection)

2. Let Q = (1, 1), and let f be the line through @ with direction vector V = 2 a) Find the Cartesian equation of the line m so that po, ; = Ome. b) Let p = pot and a = pop". Using the parity and fixed points of a, prove that a is the reflection in the line p(()