Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 2 - Graphs and Functions - Summary Exercises on Graphs, Circles, Functions, and Equations - Exercises: 10

Answer

$y=3$ Refer to the graph below.
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Work Step by Step

RECALL: A horizontal line has an equation of the form $y=k$. Every point on the line has a y-coordinate $k$. The line is horizontal so its equation is of the form $y=k$. The line contains the point $(2, 3)$. The y-coordinate of this point is $3$. Since all points on a horizontal line have the same y-coordinate, then the equation of the line is $y=3$. Refer to the graph in the answer part above.
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