Lesson 3

1. Read "Example 2" on page 53 of your textbook. Then answer questions a. to d. Cover the solutions at the bottom of the page until you have completed the questions. Once you have finished, check your answers with the solutions provided on pages 53 to 55.
2. Using the scatterplot on page 53 of your textbook, what approximate fuel economy do you think you would have for a 900 kg and 2500-kg vehicle on the highway and on city streets? Answer
3. Using the scatterplot on page 53 of your textbook, what approximate fuel economy do you think you would have for a 1750-kg vehicle on the highway and on city streets? Answer

In calculating the fuel economy for a 900-kg vehicle and the 2500-kg vehicle, the weights were “outside” of the given data values. This is called extrapolation. If asked to find a value within the given values—for example, 1750 kg—this is described as interpolation.

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