College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 3 - Polynomial and Rational Functions - Exercise Set 3.4 - Page 387: 22

Answer

Vertical asymptote: $x = 3$ Graph holes = none

Work Step by Step

Vertical asymptotes in rational functions are always given by the denominator's zeros. Therefore, for this exercise, to identify the vertical asymptote, one equals the denominator to zero: $$x -3 = 0$$ And solve for $x$: $$x = 0 + 3$$ $$x = 3$$ The "holes" in graphs, however, occur when a rational function behaves as a polynomial because the "numerator" can be divided into the "denominator" without a remainder. That is not the case in this exercise - therefore, there are no "holes".
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