Suppose that y varies jointly with w and x and inversely with z and y = 320 when w = 6, x = 20, and z = 3. Write the equation that models the relationship.
The equation that models the relationship is:
y = k(wx/z)
where k is the constant of proportionality.
To find k, we can plug in the given values:
320 = k(6*20/3)
320 = k(40)
k = 8
Therefore, the equation that models the relationship is:
y = 8(wx/z)