Precalculus (6th Edition) Blitzer

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

Chapter 2 - Review Exercises - Page 431: 71

Answer

vertical asymptotes $x\pm3$ horizontal asymptote $y=0$ no slant asymptote. See graph.

Work Step by Step

Step 1. The vertical asymptotes can be found by letting $x^2-9=0$, which gives $x\pm3$ Step 2. The horizontal asymptote can be found when $x\pm\infty$ and we get $y=0$ Step 3. The slant asymptotes exist if the numerator is one order higher than the denominator; for the given rational function, there is no slant asymptote. Step 4. See graph.
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