Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 11 - Rational Expressions and Functions - 11-7 Graphing Rational Functions - Lesson Check - Page 710: 6

Answer

Your friend is wrong because the vertical asymptote is $x=-5$, not $x=5$.

Work Step by Step

The function $$f(x)=\dfrac{1}{x+5}+2$$ is defined for all real values of $x$ except for the denominator's zero(s). $$x+5=0\Rightarrow x=-5.$$ The graph of $f$ has a vertical asymptote $x=-5$, not $x=5$. The friend is wrong.
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