The answer is -6. because 12,10,8,6,4,2,0,-2,-4,-6.
Answer:
depends on how much pizza he has.
Step-by-step explanation:
.
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.