Question

Find the slope of the line joining the points A (-10, 50) and BB(10, – 30). SHOW ALL WORK!!

Answer 1

The slope of line passing though two points (x_1,y_1) and (x_2,y_2) is,

$m=\frac{y_2-y_1}{x_2-x_1}$

Substitute the value in the equation to obtain the value of m.

$\begin{gathered} m=\frac{-30-50}{10-(-10)} \\ =\frac{-80}{20} \\ =-4 \end{gathered}$

So slope of the line is -4.