Question

Solve for the systems of equation.

y=x^2-8
4x+y=-8

which method is better, elimination or substitution ?
please show work!

Answer 1

Let's solve for x.
4x+y=−8
Step 1: Add -y to both sides.
4x+y+−y=−8+−y
4x=−y−8
Step 2: Divide both sides by 4.
4x/4=−y−8/4
x=−1/4y−2
Answer:
x=−1/4y−2