Algebra-2

If z varies jointly with x and y, we can write the equation as:

z = k * x * y

where k is the constant of variation.

To find the value of k, we can substitute the given values of x, y, and z into the equation:

-6 = k * 8 * (-3)

Simplifying:

-6 = -24k

Dividing both sides by -24: