If one x-value maps to many y-values, does the relation represent a function? If the x and y values are reversed, does the relation represent a function?

The correct answer is: it is a function

Solution:-
We have two sets x and y
If one x-value maps to many y- values then this relation is not a function because in a function one member in the domain set cannot have two images in the co-domain set.
If we reversed the values  of x and y then each element  in the domain x input set has exactly one output. so it is a function