#### Answer

$\text{False}$

#### Work Step by Step

If a relation is to be a function, each element in the domain set must correspond to one element exactly in the range set.
Consider the relation defined by the set of ordered pairs $\{(1,2),(1,3)\}$.
Here, the domain element 1 corresponds to two range elements 2 and 3.
So, this relation is not a function.
Hence the given statement is $\text{false}$.