Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - 2.5 Model Direct Variations - 2.5 Exercises - Problem Solving - Page 110: 41



Work Step by Step

If the variables vary directly, then $t=as$ for some constant $a$. $\frac{23}{4.5}\approx5.1$ $\frac{40}{7.8}\approx5.1$ $\frac{82}{16}\approx5.1$ Thus there is a direct variation with $a=5.1$, and the equation is: $t=5.1s$
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