Answer:
No
Explanation:
The domain is the x-values and the range is the y-values. For a relation to be a function, each x-value has to be assigned to a DIFFERENT y-value, so you shouldn't have one x-value pointing to two different y-values. Since 14 is pointing to both 10 and 15, that means there are two coordinates with an x of 14 but with different y's, so the relation is not a function.