Answer: Yes, Angelo is correct.
Step-by-step explanation:
A relation is something that maps an input into an output.
For example:
(2,4), (3, 5), (4, 6)
Is a relation that maps:
2 into 4
3 into 5
4 into 6
etc.
Now, a function is a relation with a condition.
Each input can be mapped into only one output.
then, if we have:
(2, 3) (2,4) (5, 6)
This is a relation, but this is mapping the input 2 into 3, and into 4.
So it is mapping the same input into two different outputs, then this is not a function.
So yes, all the functions are relations, but there are relations that are not functions.
