Y x 4 y 9 2 x 6 July 8, 2019 16 32 64 128 4 x 9 y 12 − 2 x y − 6 Is 4 2 a solution to this system of equations y x 4 y 9 2 x 6 2x + 3y = 9 4x + 6y = 18 2 x + 3 y - 9 = 0 4x + 6y - 18 = 0 6xy - 4y + 6 - 9x