## College Algebra 7th Edition

Published by Brooks Cole

# Chapter 1, Equations and Graphs - Section 1.3 - Lines - 1.3 Exercises: 35

#### Answer

$y=3$

#### Work Step by Step

RECALL: A horizontal line has a slope of zero and has an equation of the form $y=k$ where $k$ the coordinate of all the points on the line. The line has a slope of zero therefore the line must be horizontal. The horizontal line passes through the point $(1, 3)$. The y-coordinate of the point $(1, 3)$ is $3$. Thus, equation of the line is $y=3$.

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