Question

Find the slope of the line that passes through (1, -19) and (-2, -7).

Answer 1

`(\stackrel{x_1}{1}~,~\stackrel{y_1}{-19})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-7}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-7}-\stackrel{y1}{(-19)}}}{\underset{\textit{\large run}} {\underset{x_2}{-2}-\underset{x_1}{1}}} \implies \cfrac{-7 +19}{-3} \implies \cfrac{ 12 }{ -3 } \implies - 4`