Physical equilibrium || Vapor pressure and boiling point, triple phase diagram || Relative humidity

Pressure at the triple point of water is

What is the effect of pressure on the boiling point of a liquid?

At dew point relative humidity is 100%.

A liquid is in equilibrium with its vapour at its boiling point . On an average the molecules in the two phases have equal :

Relative Lowering of Vapour pressure,Elevation in Boiling point,Depression in Freezing point

Relative Lowering of Vapour pressure,Elevation in Boiling point,Depression in Freezing point