Question

Solve the following system of equations: 5x + y = 9 3x + 2y = 4 A (−2, 5) B (1, 4) C (2, −1) D (4, −4)

Answer 1

(2,-1)

Y = -5x + 9

Sub for y in second formula

3x + 2(-5x + 9) = 4

3x -10x + 18 = 4

-7x = -14
X = 2

Sub into original equation

Y = -5(2) + 9
Y = -1