# What is the slope of the line passing through  (2,5); (9,1)?

Jul 19, 2017

$m = - \frac{4}{7}$

#### Explanation:

Slope formula has variable $m$
$m = \frac{{y}_{2} - {y}_{1}}{{x}_{2} - {x}_{1}}$ given two points (${x}_{1} , {y}_{1}$); (${x}_{2} , {y}_{2}$)

Given ($2 , 5$); ($9 , 1$)...
$m = \frac{1 - 5}{9 - 2}$
$= \frac{- 4}{7} = - \frac{4}{7}$