Related Post: Y 2x 2 6x 7 Y 2x 2 7x 6 X 2 Y 2 6x 7 X 2 Y 2 6x 7 0 Standard Form X 2 Y 2 6x 7 0 (2x+6)^2 Simplified 2x+8y=20 Y=2 Substitution Method