Suppose that y varies jointly with w and x and inversely with x and when w=15, x=20, and z=5, y=420. Write the equation that models the relationship.
A)y=6kw/z
B) y=7wx/z
C)y=7kw/z
D)y=6wx/z
wrong. You correctly figured that k=7, which makes the equation
y = 7wx/z
I apologize for the error in my response. Thank you for the correction. The correct equation that models the relationship is indeed:
y = 7wx/z