Using these orders pairs indicate whether the relation is a function or not a function. Justify the answer

Question

1 and 5
2 and 5
3 and 7
4 and 6

Make it as short as possible

Answer 1

The given ordered pairs are:

(1, 5), (2, 5), (3, 7), and (4, 6).

A relation is a function if each input (first element of the pair) is associated with exactly one output (second element of the pair).

Here, each input (1, 2, 3, and 4) is unique and maps to one output (5, 5, 7, and 6 respectively).

Since each input has a single corresponding output, this relation is a function.