# How do you find the slope of x + y = 7?

Jan 20, 2016

$- 1$

#### Explanation:

$x + y = 7$

$\implies y = - x + 7$
$\implies y = \left(- 1\right) x + 7$

If $y = m x + c$ is an equation then $s l o p e = m \mathmr{and} c =$y-intercept

Here $y = \left(- 1\right) x + 7$

$\implies s l o p e = - 1$ and y-intercept$= 7$

Hence slope of the line is $- 1$