Lauren is playing with a yo-yo and keeping track of its height over time. She has plotted some key points on the graph at right. The
How long does it take to complete one cycle?
How long is the string?
Find an equation that will model the height of the yo-yo over time.
2. Vertical Shift
3. Horizontal Shift
Note: part (a) is the period and
Test your answer in your graphing calculator.
Find the first two times when the yo-yo was exactly
inches above the ground.
Find where the function crosses
Note: The first two times may have occurred before the curve in the given sketch.