Question

Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4 given the same value of y?

A.) -1/7
B.) -7/9
C.-8/7
D.)-9
E.)-4/3

Answer 1

Hello there,

The correct answer is C

Here's why,
-9(-8/7)+4y=8 is -4/7

and

-3(-8/7)-y=4 is -4/7

Hope this helps!