Calculus: Early Transcendentals 9th Edition

Published by Cengage Learning
ISBN 10: 1337613924
ISBN 13: 978-1-33761-392-7

Chapter 1 - Section 1.1 - Four Ways to Represent a Function - 1.1 Exercises - Page 18: 14

Answer

Yes

Work Step by Step

STEP 1: By definition of a function, it can have two values of $x$ for the same value of $y$, but it cannot have two values of $y$ for the same value of $x$ (because in the latter case, it will fail the Vertical Line Test). STEP-2: In our case, the table defines $y$ as a function of $x$ as for the same value of $y$ ($11,200$) there are two values of $x$ assigned, but there are no two $x$ giving the same value of $y$.
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