Answer:

Step-by-step explanation:

Answer:
The one on the top left
Step-by-step explanation:
What makes a function, a function is that the x coordinate (x,y), cannot be repeated in the tables. The y coordinate can though.
Answer:
yes
Step-by-step explanation:
Answer:
1: yes
2:no
3:yes
Step-by-step explanation:
that's what i know