Question

Which ones are functions?

Answer 1

13. no 14. yes 15. yes

Explanation:

13 doesn't pass vertical line test

14 does pass vertical line test

15 none the numbers share the same for example if it was (0,12) and (-3,12) it would not be a function because they both have 12 as their y.

Answer 2

14 and 15 are functions

Explanation: