# What is the slope of the line passing through  (8,-6); (6,9) ?

Feb 18, 2016

The slope $= \frac{- 15}{2}$

#### Explanation:

The points are :
(8,-6) = color(blue)(x_1,y_1

(6,9) = color(blue)(x_2,y_2

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

$= \frac{9 - \left(- 6\right)}{6 - 8}$

$= \frac{9 + 6}{- 2}$

$= \frac{15}{- 2}$

The slope $= \frac{- 15}{2}$