Question

Give the Domain and Range of H={(-2,-3),(5,9),(5,-2)}
Write your answer using set notations

Answer 1

Domain = {-2, 5}

Range = {-3, -2, 9}

The domain is the set of possible x values or inputs. We list each unique x value once (ignoring any repeats)

The range is the set of possible y outputs. Convention is to sort the values from smallest to largest.

This relation is not a function because the x value x = 5 corresponds to multiple y values.