Definition of Boyle's Law

Boyle's Law Definition and Equation

Boyle's Law describes the relationship between pressure and volume at constant mass and temperature.
Boyle's Law describes the relationship between pressure and volume of a gas when mass and temperature are held constant. NASA's Glenn Research Center

Boyle's Law Definition

Boyle's Law is an ideal gas law where at constant temperature, the volume of an ideal gas is inversely proportional to its absolute pressure.

PiVi = PfVf

where
Pi = initial pressure
Vi = initial volume
Pf = final pressure
Vf = final volume