Question

What is the equation of variation if p varies jointly as q and r, and the constant of variation is 4?

a. p = 4qr
b. q = 4pr
c. 4 = pqr
d. r = 4pq​

Answer 1

a

Explanation:

Given p varies jointly as q and r then the equation relating them is

p = kqr ← k is the constant of variation

Given k = 4 , then

p = 4qr ← equation of variation