## What is a hole in a graph?

Holes and Rational Functions

A hole on a graph looks like a hollow circle.

It represents the fact that the function approaches the point, but is not actually defined on that precise \begin{align*}x\end{align*} value.

## How do you find the coordinates of a hole?

Finding A Hole in A Rational Function –

## How do you find holes in rational functions calculator?

Rational Functions Discontinuities, Holes and Vertical Asymptotes

## How do you find asymptotes and holes?

Set each factor in the denominator equal to zero and solve for the variable. If this factor does not appear in the numerator, then it is a vertical asymptote of the equation. If it does appear in the numerator, then it is a hole in the equation.

## What is the difference between a hole and an asymptote?

3 Answers. Both the numerator and the denominator being zero is a necessary but not sufficient condition for a hole; see for example the function f(x)=x+1(x+1)2. The difference between a hole and a vertical asymptote is that the function doesn’t become infinite at a hole.

## How do you know if its a vertical asymptote or a hole?

Identifying vertical, horizontal asymptotes and holes –

## How do you solve holes?

Before putting the rational function into lowest terms, factor the numerator and denominator. If there is the same factor in the numerator and denominator, there is a hole. Set this factor equal to zero and solve. The solution is the x-value of the hole.

## How do you find the y value of a hole?

The possible x-intercepts are at the points (-1,0) and (3,0). To find the y-coordinate of the hole, just plug in x = -1 into this reduced equation to get y = 2. Thus the hole is at the point (-1,2). Since the degree of the numerator equals the degree of the denominator, there is a horizontal asymptote.

## What does an open hole on a graph mean?

HoleA hole exists on the graph of a rational function at any input value that causes both the numerator and denominator of the function to be equal to zero. They occur when factors can be algebraically canceled from rational functions. Removable discontinuityRemovable discontinuities are also known as holes.

## What is a removable discontinuity?

A hole in a graph. That is, a discontinuity that can be “repaired” by filling in a single point. Formally, a removable discontinuity is one at which the limit of the function exists but does not equal the value of the function at that point; this may be because the function does not exist at that point.

## How do you find the asymptotes of a function?

**Finding Horizontal Asymptotes of Rational Functions**

- If both polynomials are the same degree, divide the coefficients of the highest degree terms.
- If the polynomial in the numerator is a lower degree than the denominator, the x-axis (y = 0) is the horizontal asymptote.

## How do you do Asymptotes?

The vertical asymptotes will occur at those values of x for which the denominator is equal to zero: x − 1=0 x = 1 Thus, the graph will have a vertical asymptote at x = 1. To find the horizontal asymptote, we note that the degree of the numerator is two and the degree of the denominator is one.