It may be Boyle's law, but there is not enough context in the question to be sure.
Boyle's Law
PV=k Apex (:
R = PV/T
Boltzman constant
According to the ideal gas law, pressure times volume is constant. We'll call that constant c. PV=C, P=c/V, so pressure is inversely related to volume, so it would look like the graph y=1/x multiplied by a constant.
The formula PV = C is done by the Gas Law to measure pressure and volume's relationship.
Boyle's Law
Boyle's Law, but it does go further than PV = c.
The equation PV = nRT is derived from the ideal gas law, which incorporates principles from both Charles's Law and Boyle's Law. Boyle's Law states that pressure and volume are inversely related at constant temperature, while Charles's Law states that volume and temperature are directly related at constant pressure. Therefore, PV relates to Boyle's Law when temperature is constant, and it relates to Charles's Law when pressure is constant.
C.
PV=k Apex (:
PV = constant
PV=nRT also as an aside: Laws are described Law is described
Pv=k
The gas law PV = nRT is known as the ideal gas law and it describes the relationship between pressure (P), volume (V), amount of substance (n), temperature (T), and the gas constant (R) for an ideal gas. It shows that the product of pressure and volume is directly proportional to the number of moles and temperature of the gas.
PV=nRT D:
PV = constant (apex)