Question

Determine the slope of the line that passes through the points (9, -3) and (-9,-6).

Answer 1

`\bf (\stackrel{x_1}{9}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{-9}~,~\stackrel{y_2}{-6}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-6}-\stackrel{y1}{(-3)}}}{\underset{run} {\underset{x_2}{-9}-\underset{x_1}{9}}}\implies \cfrac{-6+3}{-18}\implies \cfrac{-3}{-18}\implies \cfrac{1}{6}`