Find the Axis of Symmetry f(x)=(x^2+x-12)/(x^2-4)

$f (x) = \frac{x^{2} + x - 12}{x^{2} - 4}$

Write $f (x) = \frac{x^{2} + x - 12}{x^{2} - 4}$ as an equation.

$y = \frac{x^{2} + x - 12}{x^{2} - 4}$