This empirical relation, formulated by the physicist Robert Boyle in 1662, states that the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature; i.e., in equation form, pv = k, a constant.
The graph of V against 1p is a straight line through the origin. This means that the measured volume is inversely proportional to the pressure — Boyle's Law.
