which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

y = 1/5 x

Answer: Hello, a proportional relationship is a relationship where a quantity is proportional to other.

This means that, for example, if the number Y is proportional to the number X, means that the number Y is k times the number X, where k is the constant of proportionality.

This is represented in the next way: Y = k*X

then, if k = 1/5, our relationship is : Y = (1/5) * X.