The value of the ratio y/x of two proportional quantities x and y is called..

either constant of proportionality, ratio, unit rate, proportion, rate, or proportional relationship

Respuesta :

Answer:

constant of proportionality

Step-by-step explanation:

Assuming that we have two proportional quantities; one is x and one is y.

If we know whether the relationship between them is direct or inverse proportion, then the ratio of the two quantities y/x gives us a constant generally known as the constant of proportionality.