Answer:
True
Explanation:
{(-1, 2), (0, 2), (5, 2)} is a function.
A relation is a function when each input has an output.
Input should not be repeated. If single input has two ouput then the relation is not a function.
In the given relation
Input -1 has output 2
Input 0 has output 2
Input 5 has ouput 2. output can be repeated.
In the given relation, each input has an output.
So It is a function . True