### Home > CCA2 > Chapter 7 > Lesson 7.1.1 > Problem 7-9

7-9.

Consider the function . Homework Help ✎

Complete the square to find the vertex.

Add and subtract

on the same side of the equal sign. Simplify.

Simplify more.

Find the

*y*-intercept.Substitute

to find the *y*-intercept.Use the vertex, the

*y*-intercept, and the symmetry of parabolas to find a third point and sketch the graph.