Answer:
Pressure and volume
Explanation:
Boyle's law was discovered by Robert Boyle in the seventeenth century, defined the basis for explaining the relationship between pressure and volume that exists in a gas.
Through a series of experiments he discovered that a gas under a constant temperature decreases the volume when we increase the pressure, and its volume increases when we reduce the pressure.
Boyle's law: P1 x V1 = P2 x V2
The pressure (P) of a gas is inversely proportional to the volume (V) of a gaseous mass at a constant temperature.
