Question

For each ordered pair, determine whether it is a solution to the system of equations. y=6x-7 9x-2y=8

Answer 1

x = 2, y = 5

Explanation:

Hello,

y=6x-7

9x-2y=8

can be written as

(1) 6x - y = 7

(2) 9x -2y = 8

(2)-2*(1) gives

9x -2y -12x +2y = 8 - 2*7 = 8 - 14 = -6

<=> -3x=-6

<=> x = 6/3=2

and we replace it in (1)

y = 6*2-7=12-7=5

hope this helps