Answer
Set notation :- $\{x|x\leq0\}$
Interval notation :- $(-\infty,0 ]$.
The graph is shown below.
Work Step by Step
Use distributive property.
$8-8+4x\leq -2x $
Simplify.
$4x\leq -2x $
Add $2x$ to both sides.
$4x+2x\leq -2x+2x $
Simplify.
$6x\leq 0 $
Divide both sides by $6$.
$\dfrac{6x}{6}\leq \dfrac{0}{6} $
Simplify.
$x\leq 0 $
The solution set is $\{x|x\leq 0\}$
or interval notation is $(-\infty, 0]$.
To graph, use a close bracket at $0$ then shade the region to the left.
