Which relation does not represent a function?
a.
{(3, 0), (0, 3)}
b.
{(6, -2), (5, -2)}
c.
{(3, 4), (3, 5)}
d.
{(5, 5), (-5, -5)}
e.
{(1, -2), (-2, 1)}

C.  {(3, 4), (3, 5)}

Step-by-step explanation:

Each input can only go to one output to be a function.  In other words, each x can only go to one y

Relation C has an x of 3 going to 2 different y's (4 and 5) so it is a relation not a function

i think it is c, not positive though

step-by-step explanation:

i think is g(1)=-1.

hope that i can