Get a free answer put in any thing

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

What point is the projection of q on a) r b) s c) t

Explain how you can use the associative property to evaluate (7x50)x4.