Question

How do you graph `x + y = 4`?

Answer 1

See below

Explanation:

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

`y=mx+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 `(0,4)`.

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 `(1, 3)`. Use a straightedge to connect those two dots and make the graph. It'll look like this:

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