" The molar conductivity of strong electrolyte is "

The molar conductivity of a strong electrolyte

The molar conductivity of a strong electrolyte.

Conductivity of a strong electrolyte

How is the molar conductivity of strong electrolytes at zero concentration determined by graphical method? Why is this method not useful for weak electrolytes?

STATEMENT 1 : The molar conductivity of strong electrolyte decreases with increases in concentration and STATEMENT 2 AT high concentration migration of ion is slow