Answer
$I$. $\{-1,0,2,4\}$
Work Step by Step
The domain of a function includes all of the $x$-values. In each ordered pair, there is $(x,y)$ therefore, take out the $x$ value.
$(2,-3)$-->$2$
$(-1,0)$-->$-1$
$(0,4)$-->$0$
$(-1,5)$-->$-1$
$(4,-2)$-->$4$
That gives you the numbers $2, -1, 0,$ and $4$, so the domain is:
$\{-1,0,2,4\}$
The correct answer is $I$.
