The answer is y=0
I am pretty sure that is right and if it’s wrong i am so sorry
A proportional relationship is used to illustrate linear equations.
The constant of proportionality is 3
From the table, we have the following points:
(x,y) = (2,6) (3,9)
The constant of proportionality is calculated using:

So, we have:

Subtract

Divide

Hence, the constant of proportionality is 3
Read more about constants of proportionality at:
brainly.com/question/18707816
The ratio would be 8:20 or 8 to 20
0.4(420) = 4(420)/10
(0.4 is essentially 4/10)
1680/10 = 168
There are 168 sixth graders