Question

Solve the system. 7x+2y=-8 8y=4x

A. -2,-1
B. -5,2
C. -1,-0.5
D. -8,4

Answer 1

C. (-1,-0.5)

Explanation:

7x+2y=-8

8y=4x

4x=8y

x=2y

7x+2y=-8

14y+2y=-8 substitute 2y for x

16y=-8

y=-1/2

8y=4x

8(-0.5)=4x

`(-4)/(4)=(4x)/(4)`

x=-1

So therefore the answer is (-1,-0.5)