Question

Solve using substitution:
y − 2x − 7 = 0
-2y − 8x = -8

Answer 1

whitch one is it (-1/2, 6)
(-4,-1)
No solution
Infinitely many solutions

Answer 2

Multiply the first equation by 2, then add. The answer is (-4, -1).

Answer 3

set a variable up equal to 0
y=2x+7
Then subsitute that in for y in the other equation

Answer 4

once you have x then plug that into one of the original equations and find y