Question

Is the relation a function (14,15),(5,7),(3,10),(11,1),(5,8)

Answer 1

no

Explanation:

Answer 2

A set of ordered pairs is called a
`\textit{relation}`:

{(14,15),(5,7),(3,10),(11,1),(5,8)} is a relation.

The pairs are called "ordered" because the order is important, for example:
(3, 4) and (4, 3) are 2 different things. In the first pair 3 is the
`\textit{first coordinate}`, but in the second one 3 is
`\textit{second coordinate}`



A relation is a
`\textit{function}` if no 2 first coordinates of the points are equal.

In the given relation, the first coordinates of points (5,7) and (5,8) are equal, so the relation is not a function.

Answer: No