# How do you graph x+y=-2 using slope and y intercepts?

Mar 25, 2015

Rewrite the equation to $y = m x + b$

This is relatively easy, just subtract $x$ on both sides

$x + y = - 2 \to y = - x - 2 \to y = \left(- 1\right) x - 2$
Now the slope is obiously $- 1$ and the $y$-intercept is $- 2$
graph{-x-2 [-12.66, 12.66, -6.33, 6.33]}

Mar 25, 2015

You can start by rearranging your equation as:
$y = a x + b$
where:
$a$ is the slope
$b$ is the intercept.

$y = - x - 2$
slope=$- 1$
intercept=$- 2$ on the $y$ axis.
Your slope tells you that every time $x$ increases of $1$ unit $y$ decreases of $1$ unit .