#### Answer

Not a function
Domain = $\left\{1, 2\right\}$
Range = $\left\{-6, 4, 6\right\}$

#### Work Step by Step

The first coordinate $2$ is paired with two different second coordinates, therefore the relation is NOT a function.
The domain is the set that contains the first components so:
Domain = $\left\{1, 2\right\}$
The range is the set that contains all the second components so:
Range = $\left\{-6, 4, 6\right\}$