A correct relationship between density and pressure of a gas is

A relationship can be obtained between density and pressure of a gas by using Boyle's law,p=K1·1V  d=mV,d= density ∴ V=md,  p=K1·dm∴ d=mK1·p=K'pThis shows that at a constant temperature, pressure is directly proportional to the density of a fixed mass of the gas.