Considering the given tables in the quetion
the table below
from the table, notice that
when
x = 2, y = 4
when
x = 4, y = 8
when
x = 9, y = 18
From these values we can deduce that
for every value of x
[tex]y=2x^{}[/tex]
This gives a proportional relationship between x and y
y = 2x
