For which case λ values v/s C shows a straight line

Debye -Huckel Onsager equationA is constant depends on valency of electrolyte.Strong electrolytes undergo complete ionization ,the maximum equivalent conductance is called Equivalent conductance at infinite dilution.But weak electrolyte can never completely ionise so it is not possible to determine 'λ0' for weak electrolytes directly.So for weak electrolytesKCl is strong electrolyte . straight line is obtained.