Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 8 - Section 8.2 - Inconsistent and Dependent Systems and Their Applications - Exercise Set - Page 903: 30


Equation for I3 to keep the traffic moving is $ z+8=y+6$.

Work Step by Step

Here, the number of cars entering I3 is $ y+6$ and the number of cars leaving I2 is $ z+8$, as per the figure. And to keep the traffic going, the number of cars entering should be equal to the number of cars leaving. So, $ y+6=z+8$
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