# What is the slope of the line passing through the following points:  (-3,-6); (3,-9)?

Apr 5, 2016

The slope $= - \frac{1}{2}$

#### Explanation:

The coordinates are:
(-3,-6) = color(blue)(x_1,y_1

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

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

$= \frac{- 9 - \left(- 6\right)}{3 - \left(- 3\right)}$

= (-9 + 6) / (3 + 3

$= \frac{- 3}{6}$

$= - \frac{1}{2}$