What is the answer to my question? Please help, this is urgent

Graph the equation by plotting point x=2

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)