Answer:
3.25
Step-by-step explanation:
We are given an equation [tex]y=3.25x[/tex] and we are asked to find the constant of proportionality.
Since we know that directly proportional equations are in form of [tex]y=k*x[/tex], where k is proportionality constant.
Upon comparing both equations we can see that value of k is 3.25 for our given equation. Therefore, constant of proportionality for our given equation will be 3.25.