### Home > AC > Chapter 8 > Lesson 8.1.2 > Problem 8-18

8-18.

The *y*-intercept is where the parabola intersects the

*y*-axis.

The *y*-intercept is where *x* = 0.

*y* = (0)² − 9*y* = −9

The *x*-intercept is where the parabola intersects the*x*-axis.

The *x*-intercept is where *y* = 0

0 = *x*² − 9

9 = *x*²

*x* = −3, +3