Question

What is the y-intercept, given the equation: y=x^2+2x−8?

Write your response as an ordered pair.

Answer 1

y-intercept is (0, -8)

Explanation:

`y = {x}^(2) + 2x - 8`

At y-intercept, x is zero

substitute x as zero:

`y = {(0)}^(2) + 2(0) - 8 \\ y = 0 + 0 - 8 \\ y = - 8`