### Home > INT2 > Chapter 9 > Lesson 9.3.4 > Problem 9-122

9-122.

Based on the graph, write an equation for each parabola. *9-122 HW eTool*

A quadratic equation forms a parabola when graphed. When equals

*equals*

The factors for a possible equation are

See the hint for part (a).

See the hint for part (a). Because the parabola intersects the -axis at only one point, its equation has a single factor, which is squared.

Use the eTool below to help you write and check a possible equation for each parabola.

Click on the link at right for the full eTool version: *INT2 9-122 HW eTool*