Question

Suppose that y varies directly with x and inversely with z. If y = 63 when x =

27 and z = 3, find the constant of proportionality.

Answer 1

constant of proportionality = 7

Explanation:

Let k = constant of proportionality

If y varies directly with x and inversely with z, then
`(yz)/(x) = k`

Substitute the values given into the equation and you get
`((63)(3))/(27) = 7 = k`