The variables x and y have a proportional relationship: when x is 5, y is 8.
What is the constant of proportionality for this relationship?
Enter your answer, as a decimal, in the box.
![The variables x and y have a proportional relationship when x is 5 y is 8 What is the constant of proportionality for this relationship Enter your answer as a d class=](https://us-static.z-dn.net/files/d20/2cd259b640e3a02e19aa38572049de88.png)