Variation / direct variation

Question

B varies with the square root of C. When B = 40, C = 50. Write the formula relating B and C with the appropriate

constant of variation.

Answer 1

Greetings! Lets solve this shall we ?

So, we must find the equation where B varies directly with the square root of C given B = 40 and C = 50. The equation of "varies directly" in this case is,

B = k √(C)

We plug in the values given to obtain our equation

40 = k√(50)

I hope this helped!