5.7.6 Lesson Summary

In this lesson, you learned how to:

• Use graphs to compare and contrast situations that involve exponential decay.
• Use information from a graph to write an equation that represents exponential decay.

Here are the activities that helped you reach those goals:

• 5.7.1: Patterns in Real Numbers
  • In this activity, you analyzed all the possible patterns connecting a set of numbers in a table. The numbers were written in both decimal and fraction form, and you may have noticed different patterns in each format.
• 5.7.2: Comparing Graphs
  • In this activity, you looked at the graphs of the values of different cell phones over time. You were able to analyze each cell phone and compare them to one another by looking at key features of the graphs.
  • 5.7.2: Self Check
  • 5.7.2: Additional Resources
• 5.7.3: Describing Graphs
  • In this activity, you connected the verbal description of a graph to the matching graph. Each description was a real-life scenario, and all of the graphs were exponential. You had to consider words that represent different growth rates and whether the situation was growth or decay.
  • 5.7.3: Self Check
  • 5.7.3: Additional Resources
• 5.7.4: Quantities that Change Exponentially
  • In this activity, you analyzed a graph and determined which of the scenarios provided it matches. It was a wrap up of all of the other skills from this lesson.

After these activities, you completed the following practice:

• 5.7.5: Practice