Need help will reward

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect