What is the horizontal asymptote of :

y=23x/x+18

k so i know that the horizontal asymptote is -18 so that the denominator will equal zero.

Actually, the horizontal asymptote is not determined by making the denominator equal to zero. In this case, to find the horizontal asymptote of the function y = 23x/(x + 18), we need to look at the degrees of the numerator and denominator.

The degree of the numerator is 1 (since it is a linear function with x) and the degree of the denominator is also 1. When the degrees of the numerator and denominator are equal, we can determine the horizontal asymptote by looking at the leading coefficients of the numerator and denominator.

In this case, the leading coefficient of the numerator is 23 and the leading coefficient of the denominator is 1. Therefore, the horizontal asymptote is given by the ratio of the leading coefficients, which is 23/1 = 23.

So, the horizontal asymptote of the function y = 23x/(x + 18) is y = 23.