Respuesta :
Answer:
A. Unit rate
Step-by-step explanation:
We know that when two variables are proportional, they vary by same constant known as the constant of proportionality.
i.e. If x and y are directly proportional, then we have the relation y = kx where k is any constant known as the constant of proportionality.
Now, as y = kx → [tex]k=\frac{y}{x}[/tex].
So, the value of k represents the quotient of y by x.
i.e. the value of k is represented by unit rate, which is the comparison of two quantities combined together.
Hence, the constant of proportionality can be referred as unit rate.
