Answer
Refer to the image below for the graph.
Work Step by Step
Divide by 5 on both sides of the equation to obtain:
$y=\frac{-30}{5}
\\y=-6$
RECALL:
The graph of the equation $y=k$ is a horizontal line.
Every point on the line has the same y-value.
Thus, to graph $y=-6$, you can plot the points (0, -6), (-3, -6), and (3, -6).
Then, connect them using a line.
