Boyles Law
Assumes constant temp
Pressure and volume constant providing temp same
P1V1 = P2V2
Charles Law
Temp varied
Constant pressure if temp increases volume must increase
P1/T1 = P2/T2
Constant volume if temp increases pressure must increase
V1/T1 = V2/T2
General Gas Equation
P1V1/T1 = P2V2/T2