# How do you graph x + y = 4?

See below

#### Explanation:

Let's put this into slope-intercept form to make graphing easier. The general equation for that form is:

$y = m x + b$

where m is the slope and b is the y-intercept. So we'll get:

$x + y = 4$

$y = - x + 4$

The y-intercept is 4, so that's a point $\left(0 , 4\right)$.

The slope is $- 1$, so the graph will move one point down for every point it moves right. The next point we can graph is $\left(1 , 3\right)$. Use a straightedge to connect those two dots and make the graph. It'll look like this:

graph{-x+4 [-10, 10, -5, 5]}