### Home > PC3 > Chapter 8 > Lesson 8.1.2 > Problem 8-34

‑values are in seconds. Complete the following problems based on the graph. Homework Help ✎

How much time does it take to complete one cycle?

How long is the string?

Write an equation that models the height of the yo-yo over time.

Determine the first two times when the yo-yo is exactly

inches above the ground.

Use the *x*-values to determine this quantity.

This is the difference in the maximum and minimum heights.

Identify:

1. Amplitude

2. Vertical Shift

3. Horizontal Shift

4. *b* (frequency)

Note: Part (a) is the period and *b* = 2*π<\i>/pTest your answer in your graphing calculator.*

Use a graphing calculator to determine where the function crosses *y* = 30.

Note: The first two times may have occurred before the curve in the given sketch.