Question

Given the following system, the x-value of the solution is -1. Solve for y.

Answer 1

1. y=3

2. y=3

Explanation:

Let's start with the first one, 2x-2y=-8...

• Substitute x with -1 -----> 2(-1)-2y=-8
• 2 times -1 makes -2 so new equation is ---> -2-2y=-8
• Now add 2 on each side to get rid of 2 and get this ----> -2y=-6
• Now divide -6 by -2 to get this ----> y=3

Let's start with the second one, 2x+2y=4

• Substitute x with -1 -----> 2(-1)+2y=4
• 2 times -1 makes -2 so new equation is ---> -2+2y=4
• Now add 2 on each side to get rid of 2 and get this ----> 2y=6
• Now divide 6 by 2 to get this ----> y=3

I hope my explanation and answer helps:)

Answer 2

Answer
Y= 3
Y=3
Explanation
If you need to show work I can put it in the comments:)