Question

solve each system by substitution.
4x+4y=0
y=2x+6

Answer 1

I explained basically this exact question to you earlier!

Answer 2

whats x and y?

Answer 3

4x + 4(2x-6) = 0
Just plug in 2x+6 everywhere you see y

Answer 4

ya there bud

Answer 5

4x + 8x + 24 = 0
Combine like terms: 12x + 24 = 0
Subtract 24 from both sides: 12x = -24
Divide each side by 12: x = -2

Then plug it in to solve for y:

4(-2) + 4y = 0
-8 + 4y = 0
Add 8 to both sides: 4y = 8
Divide each side by 4: y = 2

So the answer is (-2, 2)