Answer:
the answer is D no solution
The number would stay the same because, for example, 6 - 0 can't be 0 so it would be 6.
All it takes for a relation to be a function is for each possible first number of a pair there's only one possible second number.
So if any of the sets has two pairs with the same first number, that one's not a function.
The last one has (3,2) and (3,5) so isn't a function.
A logical conclusion would say “Kelly is 15 minutes late to school.”