#### Answer

domain: $\left\{-2\right\}$
range: $\left\{-\infty, +\infty\right\}$
Refer to the graph below.
The line contains the points $(-2, 0)$ and $(-2, 3)$.
Plot the points above and connect them using a line.
(Refer to the graph in the answer part above.)

#### Work Step by Step

Solve for $x$ to obtain:
$2x+4=0
\\2x+4-4=0-4
\\2x=-4
\\\frac{2x}{2}=\frac{-4}{2}
\\x=-2$
This means the given equation is equivalent to $x=-2$.
RECALL:
The line $x=a$, where $a$ is a real number::
(a) is vertical. All points on this line have an x-coordinate of $a$;
(b) has the set of real numbers as its range; and
(c) has a domain of $\left\{a\right\}$
Thus, the graph of the equation $x=-2$ is a vertical line.
All points on the line have an x-coordinate of $-2$.
The domain is $\left\{-2\right\}$.
The range is $\left\{-\infty, +\infty\right\}$.
The line contains the points $(-2, 0)$ and $(-2, 3)$.
Plot the points above and connect them using a line.
(Refer to the graph in the answer part above.)