4x 2y 6 2x 4 y July 8, 2019 16 32 64 128 4x 2y 6 2x 4 y inconsistent 2x y 6 4x 2y 4 graph 4x 2y 4 0 2x y 6 0 2x y 6 4x 2y 4 by substitution 2x y 6 4x 2y 4 elimination method 6xy - 4y + 6 - 9x 2x + y = 4 4x + 2y