Describe, using words, an equation, *and* a graph for each, the following gas laws: (i) Boyle's Law (ii) Charles' Law (iii) The Pressure Law

(i) At constant temperature, the pressure p and volume V of a gas are inversely proportional; pV = constant; graph of isothermal pressure/volume curves.        (iii) At constant pressure, the volume V of a gas is directly proportional to its temperature T (in Kelvin); V/T = constant; graph.                         (iii) At constant volume, the pressure p of a gas is directly proportional to its temperature T (in Kelvin); p/T = constant; graph.