Proportional relationships

[Faye]

If someone could please help me with this question I would greatly appreciate it

 

[Harry_the_cat]

To help you understand what is going on here's some questions to answer first:
If you have a square and double the length of each side, what happens to the area?
If you have a square and multiply the length of each side by 3, what happens to the area?

 

[Pedrox32]

Try yo continue from here!