Question

Solve for the constant of variation, k. z varies jointly as x and y. x = 3, when y = -8 and z = 6.

Answer 1

k = -0.25

Explanation:

If z varies jointly, that means z = k * x * y

putting in the numbers it gives us,

6 = k * (3) * (-8)

6 = k * (-24)

k = -(1/4) = -0.25