Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 3 - Introduction to Graphing - 3.3 Graphing and Intercepts - 3.3 Exercise Set - Page 179: 60


Refer to the graph below.

Work Step by Step

The graph of an equation of the form $y=k$ is a horizontal line whose y-intercept is $0, k)$. Each point on the line has a y-coordinate of $k$. Thus, the graph of $y=4$ is a vertical line whose y-intercept is $(0, 4)$. Each point on the line has a y-coordinate of $4$. This, means that the following points are all on the line: $(-2, 4)$, $(0, 4)$, and $(2, 4)$ Plot the three points listed above then connect them using a line to complete the graph. (refer to the attached image in the answer part above for the graph)
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