Verified Answer :

It seems you can fill in the table with the equation y = 3 * x
x = 1 then y = 3
x = 3 then y = 9

since 2 has 6, divide 6 by 2 and get 3. Three times each number to get the whole graph.

x , y, equation

0, 0, 00=0

1, 3, 13=3

2, 6, 23=6

3, 9, 33=9

4, 12, 43=12

5, 15, 53=15