# How do you write an equation of a line with (-2,3); m=-1?

Apr 13, 2018

$y = - x + 1$

#### Explanation:

Slope-intercept form of a line: $y = m x + b$, where m is the slope and b is the y-intercept

Put -1 in for m:

$y = - x + b$

To solve for b, put in the point $\left(- 2 , 3\right)$.

$3 = - \left(- 2\right) + b$

$3 = 2 + b$

$b = 1$

The equation is $y = - x + 1$