Answer:
neither are functions
Explanation:
For a relation to be a function each value of the input x must map to exactly one unique value in the output y
(1)
This relation is not a function since
7 → 2 and 5 → 2
Two different values of x have the same output , thus not a function
(2)
This relation is not a function since
3 → 10 and 3 → 8
Two different values of x have the same output, thus not a function