Inclined asymptote can be found by calculating the limit of x/sqrt(3), divided by x at x->+oo and x ->-oo
$$\lim_{x \to -\infty}\left(\frac{\sqrt{3}}{3}\right) = \frac{\sqrt{3}}{3}$$
Let's take the limitso,
inclined asymptote equation on the left:
$$y = \frac{\sqrt{3} x}{3}$$
$$\lim_{x \to \infty}\left(\frac{\sqrt{3}}{3}\right) = \frac{\sqrt{3}}{3}$$
Let's take the limitso,
inclined asymptote equation on the right:
$$y = \frac{\sqrt{3} x}{3}$$