Answer
$-\frac{7}{3}$ is the zero of $f(x)$.
Work Step by Step
Set $f(x)=0$ then solve for $x$:
$0=3 x+7$
Adding $-7$ on both sides we get
$-7 = 3x$
Divide by $3$ on both sides:
$x=-7 / 3$.
Thus, the zero of $f(x)$ is $ -\frac{7}{3}$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 5 - Trigonometric Functions - Section 5.1 Angles and Their Measures - 5.1 Assess Your Understanding - Page 389: 134
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