# How do you find the slope of the line through the points (1,-2), and (3,-8)?

Feb 18, 2016

The slope $= - 3$

#### Explanation:

The points are :
(1,-2) = color(blue)(x_1,y_1

(3,-8) = color(blue)(x_2,y_2

Slope is calculated using formula: $\frac{{y}_{2} - {y}_{1}}{{x}_{2} - {x}_{1}}$

=(-8 - (-2))/(3-1

=(-8 + 2)/(2

=(-6)/(2

$= - 3$