It is believed that two variables, $v$and$w$are related by the equation$v=k{w}^n$, where$k\text{,}n\in \mathbb{R}$.Experimental values of$v$and$w$are obtained. A graph of$\text{ln}v$ against$\text{ln}w$shows a straight line passing through (−1.7, 4.3) and (7.1, 17.5).

Find the value of$k$and of$n$.