Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 8 - Section 8.2 - Graphing Linear Equations - Exercises - Page 304: 38


i is the dependent variable; t is the independent variable

Work Step by Step

Given that $i=18-3t$, i is the dependent variable and t is the independent variable. With this type of equation you are being asked to solve for i based on varying values of t. Because the value substituted for t can be changed arbitrarily, t is called the independent variable. Because the value that is computed for i changes based on the value of t, i is called the dependent variable.
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