Answer
Refer to the graph below.
Work Step by Step
Solve for $y$.
Subtract $x$ to both sides:
$x+5y-x=20-x
\\5y=20-x
\\5y=-x+20$
Divide $5$ to both sides:
$\frac{5y}{5} = \frac{-x+20}{5}
\\y=-\frac{1}{5}x+4$
This means the given equation has the same graph as $y=-\frac{1}{5}x+4$.
This equation has:
slope = $-\frac{1}{5}$
y-intercept: $(0, 4)$
To graph the given equation, perform the following steps:
(1) Plot the y-intercept $(0, 4)$
(2) Use the slope to plot another point.
From $(0, 4)$, move 1 unit down (the rise) and 5 units to the right (the run) to reach $(5, 3)$. Plot $(5, 3)$.
(3) Connect the two points using a line to complete the graph.
(Refer to the attached image in the answer part above for the graph.)