Which of the following relationships correctly expresses the Boyle's law?

The correct relationship that expresses Boyle's law is "P \(\alpha\) \(\frac{1}{V}\) at constant T." This means that at a constant temperature, the pressure of a gas is inversely proportional to its volume. In other words, as the volume of a gas decreases, its pressure will increase, and vice versa, as long as the temperature remains constant. This relationship is often written as PV = constant, where P is the pressure, V is the volume, and the product of the two is constant as long as the temperature remains constant.