The given equation is
![y=5.8x](https://img.qammunity.org/2023/formulas/mathematics/college/eiyyt7bq6oto05ezvzisyjewqxvxkywlth.png)
Where 5.8 is the constant of proportionality.
Additionally, the point (1, 5.8) represents the constant of proportionality because it's telling the constant ratio of change between variables.
Therefore, the answer is a constant ratio of change.