Question

When would it be more useful to represent a proportional relationship with a graph rather than an equation

Answer 1

When you need to visually compare two things

Answer 2

It would be more useful to represent a proportional relationship with a graph rather than an equation when you need to compare two things visually. The graph gives you a clearer idea than am equation. I hope that this is the answer that you were looking for and it has actually come to your great help.