Question

Which of the following sets of ordered pairs represents a function? {(-1,4),(1,4),(2,4),(-2,4)} {(-2,1),(-1,3),(2,1),(-2,2)} {(2,2),(3,3),(4,4),(2,1)} {(-1,3),(-1,4),(-1,5),(-1,6)}

Answer 1

The set that is a function is {(-1,4),(1,4),(2,4),(-2,4)}

Explanation:

The Domain is just the input values

Domain = (-1, 1, 2, -2)