You can
put this solution on YOUR website!In terms of maths we have y

or converting to an equation,

where k is the constant of proportionality. Now we need to find the value of k. For this we need to know y and x, which we do from the question. So put the values into the equation to find k.
So the equation is now:

. You can now do the final part: "find y when x=16".
Hope that helps.
Regards,
-Mike