Answer
$C$.
Work Step by Step
For $y=-tanx$, the graph should pass $(0,0)$ and decreases in $(-\frac{\pi}{2}, \frac{\pi}{2})$, thus the answer is $C$.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 6 - The Circular Functions and Their Graphs - 6.5 Graphs of the Tangent and Cotangent Functions - 6.5 Exercises - Page 623: 7
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