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Home > CC3 > Chapter 7 > Lesson 7.3.2 > Problem 7-105

7-105.
  1. Jeffrey and Liz are each saving money for college. Their savings are shown in the graph at right. Homework Help ✎

    1. Based on the graph, who is saving money fastest? Justify your answer.

    2. Estimate the slope of each line. What does the slope tell you about this situation?

A steeper slope means that more money is being saved for a given time period.

Who has the line with the steeper slope?

Find the change in y and divide by the change in x for each line.

The slope is the rate at which each person saved money.