Chapter 2 Linear Equations and Functions - 2.2 Find Slope and Rate of Change - 2.2 Exercises - Skill Practice - Page 86: 20

parallel

By using the slope formula, the slopes of the lines are: $m_1=\frac{y_2-y_1}{x_2-x_1}=\frac{4-5}{-1-2}=\frac{-1}{-3}=\frac{1}{3}.$ $m_2=\frac{y_2-y_1}{x_2-x_1}=\frac{2-4}{-6-0}=\frac{-2}{-6}=\frac{1}{3}.$ Since $m_1=m_2$, they are parallel.