Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - 2.1 - Linear Equations in Two Variables - 2.1 Exercises - Page 170: 65

Answer

Parallel

Work Step by Step

The slope is critical when determining if lines are parallel, perpendicular, or neither. Since the equations are given in point slope form (y = mx + b), the slope will be the value of m. In this example, the lines and slopes are: $y_{1}$ = $\frac{-2}{3}$x - 3 where m = $\frac{-2}{3}$ $y_{2}$ = $\frac{-2}{3}$x + 4 where m = $\frac{-2}{3}$ If the slopes of the two lines are the same, then the lines are parallel. If the slopes of the two lines are negative reciprocals, then the lines are perpendicular. Using this rule, the two lines are parallel since the two slopes are the same, $\frac{-2}{3}$ = $\frac{-2}{3}$.
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