#### Answer

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#### Work Step by Step

The x-axis can be written as
$$y=0$$
The equation of a line in slope-intercept form is
$$y=mx+b$$
where $m$ is the slope and $b$ is the y-intercept.
So, in this case
$$m=0$$because there is no $x$ term.

Published by
Pearson

ISBN 10:
0321749006

ISBN 13:
978-0-32174-900-0

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