Answer
Function.
Domain: $\left\{-1, 2, 4\right\}$ and
Range: $\left\{0, 3\right\}$
Work Step by Step
A function can not have two different $y$ coordinates for the same $x$ coordinate.
We see that every $x$ coordinate in the given relation is paired with only one $y$ coordinate.
Therefore, the given relation is a function.
The domain of any function consists of the values it can take on the x-axis, whereas the range consists of the values it can take on the y-axis.
Thus, this function has the following domain and range:
Domain: $\left\{-1, 2, 4\right\}$ and
Range: $\left\{0, 3\right\}$
