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

8-18.

Graph

*y*=*x*^{2}− 9 on graph paper. Homework Help ✎Name the

*y*-intercept. What is the connection between the*y*-intercept and the rule*y*=*x*^{2}− 9?Name the

*x-*intercepts. What is the connection between the*x-*intercepts and the rule*y*=*x*^{2}− 9?

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