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How Do You Find the Rate of Change Between Two Points in a Table?

The population of Sun City has been decreasing at a steady pace over the last twenty years. Use the table below to find the rate of change of the population.

Summary

  1. Rate of Change is equal to the Change in Distance (Vertical Change) over the Change in Time (Horizontal Change).
  2. A rate is a ratio of two different units. In this problem, our units are miles and hours, and the ratio is miles over hours, or miles per hour.

Notes