Answer
Refer to the attached image below for the graph of the given equation.
Work Step by Step
Isolate $x$ to have:
$8x+y^2=0
\\8x=-y^2
\\x = -\dfrac{y^2}{8}$
To graph the given equation, do the following steps:
(1) Create a table of values. (refer to the attached image below)
(2) Plot each point then connect them using a smooth curve and form a parabola. (refer to the attached image in the answer part)