Now, anytime a denominator is 0, the value of a fraction or rational function is undefined. To gain access to our editable content join the precalculus teacher community. Vertical asymptotes occur when the function values increase without bound as the input approaches a certain value. In other words for some value of x, which is the line describing the vertical asymptote. The degree of the numerator is greater than the degree of the denominator, so there is no horizontal asymptote. Selection file type icon file name description size revision time user. Free download precalculus pearson new international edition ebooks pdf author. Rational functions horizontal asymptotes and slants. Really clear math lessons prealgebra, algebra, precalculus, cool math games, online. Read online now glencoe precalculus answer key ebook pdf at our library.