# What is the slope of the line between  (-3,7)  and  (18,-5) ?

Mar 23, 2016

The slope is $m = - \frac{12}{21}$

#### Explanation:

The formula for the slope of a line based upon two coordinate points is

$m = \frac{{y}_{2} - {y}_{1}}{{x}_{2} - {x}_{1}}$

For the coordinate points $\left(- 3 , 7\right) \mathmr{and} \left(18 , - 5\right)$
${x}_{1} = - 3$
${x}_{2} = 18$
${y}_{1} = 7$
${y}_{2} = - 5$

$m = \frac{- 5 - 7}{18 - \left(- 3\right)}$

$m = - \frac{12}{21}$

The slope is $m = - \frac{12}{21}$