Solve for the value of the constant of variation k and the equation of

variation. Show your solution and box the final answers.

1-3) m varies directly as n and m = 48 when n = 6.


4-6) y varies inversely as x and y = 12 when x = 5.


7-9) z varies jointly as x and y and z = 60 when x = 5 and y = 6.


10-12) If p varies directly as q and the square of r and inversely as s,
and p = 40 when q = 5, r= 4 and s = 6.


13-15) t varies jointly as r and v. If t = 3 when r = 3 and v = 15,
find t when r = 6 and v = 9.​