Some equations related to gas laws are given below: `V alpha P`, `V/T=`a constant, `V alpha n`, PV=a constant: Which of these are correct?

Some equations related to gas laws are given below: V alpha P , V/T= a constant, V alpha n , PV=a constant: Write the gas law to which it is related for the correct equations.

A company manufacturing PVC pipes claims in an advertisement that the volume of water flowing out through the pipe in a given time is as per the equation V=KA^2ut where A is the area of cross section of the pipe, u is the speed of flow, t is the time and K is a dimensionless constant. Check the equation and state whether the claimis correct.