Final answer:
The volume of a gas being inversely proportional to the pressure of the gas with constant temperature and amount is defined by Boyle's law.
Step-by-step explanation:
The law that states the volume of a gas is inversely proportional to the pressure of the gas, assuming temperature and amount of the gas are constant, is known as Boyle's law. Robert Boyle, an English natural philosopher, formulated this principle over 300 years ago, which plays an integral part in the behavior of gases.
Boyle's law is distinct from other gas laws, such as Charles's law, which indicates the volume of a gas is directly proportional to its temperature (in kelvins) at a constant pressure, and Avogadro's law, which states at the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules.
Therefore, the student's question regarding its relationship to pressure and volume is accurately described by Boyle's law.