To find the slope you need to use the equation [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]. (2, 15) and (-8, -5) is (x1, y1) and (x2, y2). [tex]m=\frac{-5-15}{-8-2}=\frac{-20}{-10}=2[/tex], so the slope of the line that passes through the points -2, 15 and -8, -5 is two.
