#### Answer

$\text{slope is undefined}$

#### Work Step by Step

All vertical lines have an undefined slope. Hence, $
m \text{ is undefined}
.$

Published by
Pearson

ISBN 10:
0321671791

ISBN 13:
978-0-32167-179-0

$\text{slope is undefined}$

All vertical lines have an undefined slope. Hence, $
m \text{ is undefined}
.$

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