Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.10 - Lines - 1.10 Exercises - Page 115: 63

Answer

slope = 0 y-intercept = 4 Refer to the attached image for the graph.

Work Step by Step

RECALL: The graph of $y=k$ is a horizontal line whose slope is zero., and contains all the points (x, k) where x is a real number. Thus, the graph of $y=4$ is a horizontal line with a slope of zero and contains all the points (x, 4) where x is a real number. This means that the points (-2, 4), (0, 4), and (2, 4) are all on the line $y=4$, and the y-intercept is 4. Plot these points and connect them using a line. (refer to the attached image in the answer part)
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