Answer
Graph:
Work Step by Step
Intercepts (set x=0, find the y; set y=0, find the x:
$\left[\begin{array}{lll}
x=0, & & y=0\\
0+y=4 & & x+0=4\\
y=4 & & x=4\\
& & \\
(0,4) & & (4,0)
\end{array}\right] $
Checkpoint (select any x, find the accompanying y):
$\left[\begin{array}{l}
x=2\\
2+y=4\\
y=2\\
\\
(2,2)
\end{array}\right]$
Plot the points and a line that passes through them.
