# How to determine domain and range of a graph

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## Domain and Range of a Function

How To Find The Domain of a Function - Radicals, Fractions & Square Roots - Interval Notation

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All of the values that can go into a relation or function input are called the domain. All of the values that come out of a relation or function output are called the range. Range may also be referred to as "image". Note that both relations and functions have domains and ranges. The domain is the set of all first elements of ordered pairs x -coordinates. The range is the set of all second elements of ordered pairs y -coordinates.

The domain of a rational function consists of all the real numbers x except those for which the denominator is 0. To find these x values to be excluded from the domain of a rational function, equate the denominator to zero and solve for x. One way of finding the range of a rational function is by finding the domain of the inverse function. The graph approaches x -axis as x tends to positive or negative infinity, but never touches the x -axis. That is, the function can take all the real values except 0.

Domain and Range. Learning Objective s. Relations and functions describe the interaction between linked variables. These relationships include independent values and inputs , which are the variables that can be manipulated by circumstances. They also include dependent values and outputs , which are the variables that are determined by the independent values. There is another pair of components we must consider when talking about relations, called domain and range. The domain of a function or relation is the set of all possible independent values the relation can take.

Finding Domain and Range. Learning Objective s. Functions are a correspondence between two sets, called the domain and the range. When defining a function, you usually state what kind of numbers the domain x and range f x values can be. There may be restrictions on the domain and range. The restrictions partly depend on the type of function.

## Determining the Domain and Range for Quadratic Functions

Functions v. When functions are first introduced, you will probably have some simplistic "functions" and relations to deal with, usually being just sets of points. - Easy to understand math lessons on DVD.

## Functions: Domain and Range

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Math Algebra I Functions Introduction to the domain and range of a function. Intervals and interval notation. What is the domain of a function?

## Domain and Range of Rational Functions

Given a situation that can be modeled by a quadratic function or the graph of a quadratic function, determine the domain and range of the function. A 6 Quadratic functions and equations. The student applies the mathematical process standards when using properties of quadratic functions to write and represent in multiple ways, with and without technology, quadratic equations. The student is expected to:. How do you determine the domain and range of a quadratic function when given a verbal statement? We're going to explore different representations of quadratic functions, including graphs, verbal descriptions, and tables.

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## 5 thoughts on “How to determine domain and range of a graph”

1. Functions - Cool math Algebra Help Lessons - Domain and Range

2. Another way to identify the domain and range of functions is by using graphs.

3. Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a.