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

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Dec 22, 2016

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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]}

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