Answer:
x=-1 y=2
Step-by-step explanation:
substitution
y = 2x + 4
y=-6x - 4
(-6x - 4)=2x+4
-6x-4=2x+4
begin to isolate x
add 6x to both sides, minus 4 from both sides
-8=8x
x=-1
Solve for y by plugging in x
y=2(-1)+4
y=-2+4
y=2
