Question

Select the relations that are functions.

{(a, 1), (b, 1), (c, 1)}
{(a, a), (a, b), (a, c)}
{(1, a), (2, a), (3, a)}
{(a, a), (b, b), (c, c)}

Answer 1

a/c/d ????

Answer 2

{(a, a), (b, b), (c, c)} this is a function

Answer 3

its multiple choice

Answer 4

{(1, a), (2, a), (3, a)} this is also a function

Answer 5

k

Answer 6

the rest are not. only the 2 choices I provided

Answer 7

kkkkkk thanks