
Concept explainers
In Lesson 3-1, we studied a cab ride by looking at the price for certain distances in table and graph form. We found that the initial cost of starting the trip was $5.10, which means that you’d pay $5.10 for zero miles traveled. We also found that the slope of the line was $2.60, which means that you’d pay $2.60 per mile. Using what we learned in Lesson 3-2, we can write a formula that describes the cost of a trip (C) in terms of miles traveled (m):
Here’s a smaller version of the graph describing cab rides from Lesson 3-1. Does your answer to Question 2 match the information on the graph? Draw an arrow to the location on the graph that you used to decide.

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Chapter 3 Solutions
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