#### Answer

Refer to the image below for the graph.

#### Work Step by Step

To graph the given linear equation using the slope and y-intercept, perform the following steps:
(1) Solve for the x and y intercepts.
To find the x-intercept, set $y = 0$, and then solve for $x$:
$x+y=4
x+0= 4
\\x=4$
This means that the x-intercept is at $(4, 0)$.
To find the y-intercept, set $x = 0$, and then solve for $y$:
$x+y = 4
\\0+y=4
\\y=4$
This means that the y-intercept is at $(0, 4)$.
(2) Plot the intercepts, and then connect them using a line.
(Please refer to the attached image in the answer part above for the graph.)