Question

Use substitution method y = x - 1 4x + 8 = y

Answer 1

x=-3

y=-4

Explanation:

Given:

y=x-1

4x+8=y

Plug in the 1st equation into the 2nd equation

4x+8=x-1

subtract x from both sides

3x+8=-1

subtract 8 from both sides

3x=-9

divide both sides by 3

x=-3

Now that we have the x value, plug it into the first equation:

y=-3-1

simplify

y=-4

So, x=-3, and y=-4.

Hope this helps! :)