Answer:
Either (-4, 3) or (-4, 5).
Explanation:
A function is a relation when each input has exactly one output. The inputs must not repeat in a function.
In the relation given, the input '-4' repeats.
{(-4,3), (-5, 6), (1, 0),(-4,5), (9,5), (0, -7)}
If we remove either (-4, 3) or (-4, 5), it would make the relation a function.
Hope this helps.