This is my last and final question for my test that I need absolutely all help I can get picture is included it’s algebra 1 A l

How is working backward similar to solving an equation?

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.

I’m really confused and need to learn this