# How do you find the horizontal asymptote?

## How do you find the horizontal asymptote?

Another way of finding a horizontal asymptote of a rational function: Divide N(x) by D(x). If the quotient is constant, then y = this constant is the equation of a horizontal asymptote.

## What are the horizontal asymptote rules?

The three rules that horizontal asymptotes follow are based on the degree of the numerator, n, and the degree of the denominator, m. If n < m, the horizontal asymptote is y = 0. If n = m, the horizontal asymptote is y = a/b. If n > m, there is no horizontal asymptote.

What is horizontal asymptote in rational functions?

A horizontal asymptote refers to “end behavior like a constant (flat line with zero slope),” which happens when the degree of the numerator is no more than the degree of the denominator. Horizontal Asymptotes of Rational Functions.

What is the vertical asymptote?

A vertical asymptote is a vertical line that guides the graph of the function but is not part of it. It can never be crossed by the graph because it occurs at the x-value that is not in the domain of the function. denominator then x = c is an equation of a vertical asymptote.

### What is the best way to find horizontal asymptotes?

How to find asymptotes? If you find a vertical dashed line, find the \$x\$-intercept that the asymptote passes through. Similarly, when the asymptote is a horizontal line, find the \$y\$-intercept, \$ (0,b)\$, that it passes through. The equation of the asymptote will be \$y =b\$. Now, when given an oblique asymptote, find two points passing through the slanted line.

### How do you find a vertical asymptote?

If you are given a rational function, you can find the vertical asymptote by setting the denominator to zero and solving the equation. Find the horizontal asymptote by dividing the leading terms in the function. A vertical asymptote is a line that a curve approaches but does not cross.

What are the rules for finding a horizontal asymptote?

Rules of Horizontal Asymptote You need to compare the degree of numerator “M” to “N” – a degree of the denominator to find the horizontal Asymptote. If M > N, then no horizontal asymptote. If M < N, then y = 0 is horizontal asymptote.

How do you find the horizontal asymptotes?

To Find Horizontal Asymptotes: 1) Put equation or function in y= form. 2) Multiply out (expand) any factored polynomials in the numerator or denominator. 3) Remove everything except the terms with the biggest exponents of x found in the numerator and denominator. These are the “dominant” terms.