Answer
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.