I don't understand them please some one help me!!!!ASAP!!!

http://www.mathsisfun.com/sets/function.html

help me too

Okay take this problem for example :

x 8x y
0 8(0) 0
1 8(1) 8
2 8(2) 16
3 8(3) 24
You multiply the numbers in parenthesis
by 8.

Of course, I'm here to help you! Please let me know what you're struggling to understand, and I'll do my best to explain it to you. The more specific you can be about the topic or question you need help with, the better I can assist you.