The answer is pressure and temperature.
Explanation :
The law states that for an ideal gas, the pressure of a gas is directly proportional to the absolute temperature, at constant volume.
- It can be expressed as: (Pi/ Ti)v = (Pf /T f)v
where, Pi and Ti are the initial pressure and temperature, Pf and T f are the final pressure and temperature
- The letter (v) is written out of the brackets means that the volume is constant..