Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 5 - Chapters R-5 - Cumulative Review Exercises: 19

Answer

$y-\text{intercept is } 7 \text{ or } (0,7)$

Work Step by Step

$\bf{\text{Solution Outline:}}$ Use the definition of $y-$intercept (the value of $y$ or $f(x)$ when $x$ is $0$), to find the $y-$intercept of $ f(x)=2x+7 .$ $\bf{\text{Solution Details:}}$ Substituting $ x=0 ,$ in the given function, then \begin{array}{l}\require{cancel} f(0)=2(0)+7 \\\\ f(0)=0+7 \\\\ f(0)=7 .\end{array} Hence the $ y-\text{intercept is } 7 \text{ or } (0,7) .$
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