Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-2 Direct Variation - Practice and Problem-Solving Exercises - Page 302: 25



Work Step by Step

First, since we know that the distance (d) you bike varies directly with the amount of time (t) you bike, we can write the direct variation equation: d=kt (k is our constant) Now lets plug in the information given to us about one set of distance and time in order to find the constant (k). 13.2=k(1.25). (Divide both sides by 1.25) 10.56=k So now we can write the general equation of the direct variation as: d=10.56t
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