Question

HElp me plz ---> metal

Answer 1

Do you know what the rule is? (rule as in how many it jumps forward or back)

Answer 2

noo

Answer 3

http://www.mathsisfun.com/sets/function.html
check it out :)

Answer 4

so whats the function here i can't figure it out

Answer 5

did you read my link?

Answer 6

yes, but I don't get it.

Answer 7

If you see the same x-coordinate more than once, it is not a function.