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Home > CC4 > Chapter 8 > Lesson 8.1.4 > Problem 8-59

8-59.
  1. Jeffe and Tomas collected the following data for a bouncing basketball. What is their rebound ratio as a percent? Write a model for their data and then sketch a graph of the situation. Homework Help ✎

  2. Bounce number (x)

    1

    2

    3

    4

    Height, cm (y)

    80

    64

    51

    41

Look at the ratios of the successive y-values.

Use the general form of an exponential equation: y = a•bx. The parameter, b, is the constant ratio, 0.8.
To find the a-value, find the 0th term.

To find the 0th term, divide the first term, 80, by 0.8