Which of these is NOT a function?

2,3, and 4 only
2,3, and 4 only

All of them
All of them

3 only
3 only

1 and 2 only
1 and 2 only

3 and 4 only
3 and 4 only

1,3, and 4 only

2 only

1 and 2 only?

Yes, 1 and 2 only.

thanks cuh

You're welcome! Let me know if there's anything else I can help with.