### Home > A2C > Chapter 4 > Lesson 4.2.1 > Problem 4-65

4-65.

Find the

- and-intercepts.To find the

-intercept, substitutefor .To find the

-intercepts, factor the equation and substitutefor .The

-intercept isand the -intercepts areand Where is the line of symmetry of this parabola? Write its equation.

To find the line of symmetry, average the

-values of the-intercepts.Find the coordinates of the vertex.

Substitute the

-value for the line of symmetry into the equation.

Use the eTool below to graph the equation.

Click the link at right for the full version of the eTool: *4-64 HW eTool*