To find the slope(m), use the slope formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex] And plug in the two points on the line
(-6, 3) = (x₁, y₁)
(3, -9) = (x₂, y₂)
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m=\frac{-9-3}{3 - (-6)}[/tex] (two negative signs cancel each other out and become positive)
[tex]m=\frac{-9-3}{3+6}[/tex]
[tex]m=\frac{-12}{9}[/tex] Simplify the fraction
[tex]m=\frac{-4}{3}[/tex]
