Charle's law says that volume will increase if you keep the pressure constant when the temperature

when the temperature of a gas decreases and the volume stays constant, Guy Lussac says

Charle's law says, if you keep the pressure constant, and the volume decreases, then

When the temp. of a gas decreases, and you observe a decrease in volume and keep the pressure constant

when the gas temp. stays constant and you increase the volume, the pressure will decrease

Explains the relationship of volume and pressure of an amount gas a constant temperature

explains the relationship of of temp. and volume of an amount of gas at a constant pressure

Measure of the force exerted by movement of particles in a gas