Example 2: The amount of gas used varies directly with the
number of miles a car travels.
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What is the constant of proportionality in this
example? HINT: Stop the car at various times to see the values of the two
quantities.
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Use your answer from #1 above to compute how
much gas will have been used after driving 200 miles. Then, click on the "Show
graph" button to check your solution. Challenge: How is the constant of
variation related to the graph?
direct_variation_cleaner