The table below gives values of T and L which are related by the law where k and n are constants.

T - __1____1.2___1.4___1.6___1.8___2

L - __2.4___3.5__ 4.8__ 6.3___7.9___9.8

Prove that this law is as stated. Determine the approximate values of k and n, and hence state the law.