How to find the asymtope of a function

Asymptote at x = 3 and a horizontal asymptote at y = 1. The curves approach these asymptotes but never cross them. The method used to find the horizontal asymptote changes depending on how the degrees of the polynomials in the numerator and denominator of the function compare.

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table