### Home > PC3 > Chapter 4 > Lesson 4.1.1 > Problem 4-20

4-20.

Graph each of the following trigonometric functions. Describe the transformation.

amplitude

*horizontal shift*

*vertical shift*

Do not use a calculator! Sketch a prediction of what you think the curve looks like.

Then, use a graphing calculator to check your prediction. Correct any errors you might have made.

Remember that making mistakes and identifying and correcting them is how you build brain cells.