Question 114421
The domain of a function f(x) is the set of values allowed for x.  In this case, there are only 4 points in the function, each of which has an x-coordinate.  This set of x-coordinates is the domain of the function, namely:


{-3,-1, 1, 4}


By the way, the range of a function f(x) is the set of values that f(x) can assume for each of the x values in the domain.  For this function, the range is {-1,-4, 3, 1}