Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 2 - Functions, Equations, and Graphs - 2-6 Families of Functions - Practice and Problem-Solving Exercises - Page 104: 27

Answer

$y=2x$

Work Step by Step

Recall: The graph of $y = a\cdot f(x)$ involves a vertical stretch by a factor of $|a|$ of the graph of the parent function $f(x)$. Thus, when the graph of $y=x$ is stretched vertically by a factor of $2$, the equation of the new function is: $$y=2x$$
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