Question

Write a function that models each variation.

x = 1/3, y = 1/5, and r = 3 when z = 1/2, and z varies directly with x and inversely with the product of r² and y.

Answer 1

z = 2.7x/r²y

Explanation:

z = kx/r²y

½ = k × ⅓ ÷ (3² × ⅕)

½ = ⅓k × 5/9

k = 27/10 = 2.7

z = 27x/10r²y

z = 2.7x/r²y