### Home > A2C > Chapter 4 > Lesson 4.1.3 > Problem 4-41

4-41.

Did you need to average the

*x*-intercepts to find the vertex in part (d) of the preceding problem? Homework Help ✎What are the coordinates of the vertex for part (d)?

How do these coordinates relate to the equation?

(2, −1)

Where do they appear in the equation?

What effect do they have on the equation?