List by letter all relations that are not functions.
a.{(7, 5), (8, 5), (9, 5)}
b.{(5, 7), (5, 8), (5, 9)}
c.
d. x2 + y2 = 100
e.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.