X y 4 2x 2y 8 July 8, 2019 16 32 64 128 X y 4 2x 2y 8 graph Y =- 1 2x 4 x 2y =- 8 how many solutions Y =- 1 2x 4 x 2y =- 8 The pair of equation x y 4 and 2x 2y 8 represent X y 2z 4 2x 2y z 2 3x y 2z 8 X y 4 2x 3y 7 3x 2y 8
