Answer
$x=7$
Work Step by Step
The given function is
$\Rightarrow k(x)=7x$
Substitute $49$ for $k(x)$.
$\Rightarrow 49=7x$
Divide each side by $7$.
$\Rightarrow \frac{49}{7}=\frac{7x}{7}$
Simplify.
$\Rightarrow 7=x$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 3 - Graphing Linear Functions - Chapter Review - Page 165: 10
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