Question

look at this set of ordered pairs: (16, 5) (20, 18) (-9, -14) (7, 16) (2, 8) (14, 14) is this relation a function? yes no

Explanation:

A relation is a function if every input (first value in each ordered pair) has exactly one unique output (second value in each ordered pair). Check all first values: 16, 20, -9, 7, 2, 14. None of these input values repeat, so each input maps to only one output.

Answer:

Yes