#### Answer

$III$

#### Work Step by Step

The equation $-x^{2}+y^{2}-z^{2}=1$ is a hyperboloid of two sheets, and the only hyperboloid of two sheets can be seen in Figure $III$.

Published by
Cengage

ISBN 10:
1285740629

ISBN 13:
978-1-28574-062-1

$III$

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