Question

Which relation is a function?

Select all that apply.


{(1,4), (2,4), (3, 4), (4,4)}

{(3,1), (−3,1), (4, 3), (−4,3)}

{(3,1), (3,3), (3, 2), (2,3)}

{(3,1), (3,2), (3, 3), (3,4)}

{(3,3), (−2,−2), (0, 0), (−4,4)}

Answer 1

the first one

Explanation:

Answer 2

1. yes

2. yes

3. no

4. no

5. yes

Explanation: