Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 8 - Coordinate Geometry and Linear Systems - 8.3 - Slope of a Line - Concept Quiz 8.3: 5

Answer

True

Work Step by Step

Slope is defined as the $\frac{\text{change in}\:y}{\text{change in}\:x}$. If a line is horizontal, that means that its $y$ value is constant. When we go to calculate slope, we have a $0$ in the numerator, which makes the slope $0$.
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