$$ \begin{array}{|c|c|c|c|} \hline
f(5) & g(5) & f'(5) & g'(5) \\ \hline
-1 & 2 & 5 & -2 \\ \hline
\end{array}
$$
The table above gives values for the functions \(f\) and \(g\) and their derivatives at \(x=5\). Let \(k\) be the function given by \(k(x)=\dfrac{f(x)}{g(x)}\), where \(g(x)\neq 0 \). What is the value of \(k'(5)\) ?