$$\lim_{y \to 0^-}\left(\frac{\left(-1\right) x}{y}\right) = - \infty \operatorname{sign}{\left(x \right)}$$
More at y→0 from the left$$\lim_{y \to 0^+}\left(\frac{\left(-1\right) x}{y}\right) = - \infty \operatorname{sign}{\left(x \right)}$$
$$\lim_{y \to \infty}\left(\frac{\left(-1\right) x}{y}\right) = 0$$
More at y→oo$$\lim_{y \to 1^-}\left(\frac{\left(-1\right) x}{y}\right) = - x$$
More at y→1 from the left$$\lim_{y \to 1^+}\left(\frac{\left(-1\right) x}{y}\right) = - x$$
More at y→1 from the right$$\lim_{y \to -\infty}\left(\frac{\left(-1\right) x}{y}\right) = 0$$
More at y→-oo