According to Boyle's Law, how does the volume of a gas change with pressure?

Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is held constant. This means that as pressure increases, the volume of the gas decreases, and vice versa. The mathematical expression for Boyle's Law is ( P \times V = k ), where ( P ) is the pressure, ( V ) is the volume, and ( k ) is a constant value for a given amount of gas at a constant temperature.

The concept of inverse variation indicates that if one quantity increases, the other must decrease to maintain the product constant. Therefore, the correct answer highlights that volume varies inversely with pressure, aligning perfectly with the principles outlined in Boyle's Law. Understanding this relationship is crucial for predicting gas behavior under changes in pressure.