Question

If m varies directly with n, and m = 6 when n = 9, what is the value of n when m = 8?

Answer 1

a) n = 24
b) n = 12
c) n = 16/3
d) n = 27/4

Answer 2

https://www.khanacademy.org/math/algebra/algebra-functions/direct_inverse_variation/v/direct-variation-1

Answer 3

m =kn
6 =k(9)
6/9=k

8 =(6/9)n
8•(9/6) =n
12 =n

Answer 4

yup its 12