horizontal asymptotes

Horizontal asymptotes are horizontal lines the graph approaches. Finding horizontal asymptotes: If the degree, which is the largest exponent, of the denominator is bigger than the degree of the numerator, the horizontal asymptote is the x-axis (y = 0). If the degree of the numerator is bigger than the denominator, a horizontal asymptote does not exist. (none) If the degrees of the numerator and denominator are the same, the horizontal asymptote equals the leading coefficient (the coefficient of the largest exponent) of the numerator divided by the leading coefficient of the denominator ?