# Chapter 3 - Section 3.3 - Slope - Exercise Set: 35

perpendicular

#### Work Step by Step

m=$\frac{y_2-y_1}{x_2-x_1}$ m=$\frac{-1-2}{-5-0}$ m=$\frac{-3}{-5}$ m=$\frac{3}{5}$ m=$\frac{y_2-y_1}{x_2-x_1}$ m=$\frac{9-(-6)}{-6-3}$ m=$\frac{15}{-9}$ m=$\frac{5}{-3}$ m=-$\frac{5}{3}$ $\frac{3}{5}$$\times$-$\frac{5}{3}$=-1 Therefore the lines are perpendicular.

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