Question

If ƒ = {(4, 2),(5, 1),(6, 2),(7, 3),(8, 6)}, then the range of ƒ is

Answer 1

{(2, 4),(1, 5),(2, 6),(3, 7),(6, 8)}
{1, 2, 3, 6}
{4, 5, 6, 7, 8}

Answer 2

Example:
g={(1,2),(4,8),(4,10),(5,14), (9,14)}
The domain is {1,4,5,9}
range is {2,8,10,14}