Question

Look at this set of ordered pairs:

(19, 13)
(–4, –12)
(19, 12)

Is this relation a function?

Answer 1

A relation is considered a function if each input (the first element of each ordered pair) corresponds to exactly one output (the second element of each ordered pair).

Let's analyze the given ordered pairs:

1. (19, 13)
2. (–4, –12)
3. (19, 12)

In this set, the input 19 appears twice:

- In the first pair, 19 corresponds to 13.
- In the third pair, 19 corresponds to 12.

Since 19 is associated with two different outputs (13 and 12), this relation does not meet the criteria for a function. Therefore, **this relation is not a function**.