Domain: 4,9 Range: -3,-2,2,3 It is not a function.
Work Step by Step
The domain consists of all of the first numbers in the ordered pair. The range consists of all of the second numbers in the ordered pair. In order to determine if it is a function, make sure that all domain values match exactly one range value. (In other words, if a value in the domain is repeated, be sure that the same range value is given both times.)