Answer:
1) yes it's function
2) no, it's not function
Step-by-step explanation:
1 is function because the x coordinate (x,y) point which is the input isn't repeating. But for number 2 as you can see that 20 in the input you see 2 arrows are coming out of it which means 20 as in the input is used more than one time and like we said the input should not repeat. I hope this helped you.
