Rational Functions - Exercise 4 - Explanation of Horizontal Asymptotes Rule

Rewrite by long dividing the numerator by the denominator. Then, explain, in your own words, why the horizontal asymptote is found by dividing the leading coefficients. The justification has been given - No further properties need to be cited.  Just provide the explanation..

STATEMENT	JUSTIFICATION
	Given Division Algorithm Applied to Polynomials