If 20 cookies use 16 ounces of nuts, how many ounces of nuts are in 1 cookie?

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)

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)

|y + 2| > 6 {y|y < -8 or y > 4} {y|y < -6 or y > 6} {y|y < -4 or y > 4}