Boyle's law (sometimes referred to as the Boyle–Mariotte law) is one of many gas
laws and a special case of the ideal gas law. Boyle's law describes the
inversely proportional relationship between the absolute pressure and volume of
a gas, if the temperature is kept constant within a closed system.
fixed amount of an ideal gas kept at a fixed temperature, P [pressure] and V
[volume] are inversely proportional (while one doubles, the other halves)