Home > INT2 > Chapter 6 > Lesson 6.2.4 > Problem6-86

6-86.

Sketch the graph of $y=x^2-9$.

1. State the coordinates of the $y$-intercept. What is the connection between the $y$-intercept and the equation $y=x^2-9$?

The $y$-intercept is where $x = 0$.
$y=\left(0\right)^2-9$

1. State the coordinates of the $x$-intercepts. What is the connection between the $x$-intercepts and the equation $y=x^2-9$?

The $x$-intercepts are where $y = 0$.
$0=x^2-9$