Question

Find the constant of variation for the relationship f(x)= 40x.

Answer 1

We are given the expression f(x) = 40x where f(x) is the dependent variable and x is the independent variable. In this case, we can see that f(x) is directly proportional to x and that the constant of propotionality is 40. Answer then to this problem is D. 40 

Answer 2

Constant of variation is 40