1. {(1, 3) (4, 3) (6, 2)} is a function.


2. {(3, 4) (5, 8) (3, 7)} is a function.


3. What is the domain of {(1, 3) (4, 3) (6, 2)}?


4.What is the range of {(1, 3) (4, 3) (6, 2)}?