### Home > PCT > Chapter Ch9 > Lesson 9.1.2 > Problem 9-27

9-27.

The graph at below is the result of a transformation of

*y*= cos*x*. Find a possible equation. Homework Help ✎

Focus on the two given points. What can it tell you?

1. The amplitude is 3.

2. The period and frequency is normal.

3. The vertical shift is 5.

(Be careful when you write this in your equation.)