The inverse of \(f(x) = \frac{2x-1}{x+5}\) may be written in the form \(f^{-1}(x)=\frac{ax+b}{cx+d}\), where a, b, c, and d are real numbers. Find a/c.
\(f^{-1}(x) = \dfrac{-2x + 5}{x + 1}\)
a/c = -2