How are the graphs for:?

Boyle's Law : At constant temperature(#T#), pressure (#P#) of fixed amount of an ideal gas is inversely proportional to its volume(#V#)

#P prop 1/V #

or, #P=k/V# (where, #k# is a constant)

or, #PV = k#

this is an equation of rectangular hyperbola

And, #P# vs. #1/V# is an equation of straight line

Charle's Law: At constant pressure (#P#), the volume(#V#) of fixed amount of an ideal gas is directly proportional to its temperature (#T#) in Kelvin scale.

#V prop T#

or, #V=cT# (where, #C# is a constant)

this an equation of straight line passing through origin.

Gay-Lussac's Law or Pressure Law: At constant volume(#V#) the pressure(#P#) of fixed amount of an ideal gas is directly proportional to its temperature(#T#) in Kelvin scale.

#P prop T#

or, #P = bT# (where, #b# is a constant)

so,this is also an equation of straight line passing through origin.