# Identify domain and range of relationship

### How to find domain and range from a graph (video) | Khan Academy

A(2)(A) determine the domain and range of a linear function in mathematical problems; determine reasonable Find the domain and range of this relationship. Find Domain And Range Of The Inverse Of A Relation: Example Question #1. Which of the following values of x is not in the domain of the function y = (2x – 1). Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a.

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. Only the elements "used" by the relation or function constitute the range. Set Builder notation may be used to express domains and ranges. State the domain and range of the following relation: No, this relation is not a function. The eye colors are repeated.

State whether the relation is a function. While these listings appear in ascending order, ordering is not required. Do not, however, duplicate an element. The x-value of "1" had two corresponding y-values 3 and State the domain and range for the elements matched in the diagram below. State whether the matches form a function.

Note that the range is only the elements that were used. It is the "possible" set from which output from the relation will fall. The co-domain is NOT necessarily the same as the range. There may be values in the co-domain that are never used. State the domain and range associated with the scatter plot shown below. State whether the scatter plot is a function.

### Domain and Range - MathBitsNotebook(A1 - CCSS Math)

No x-values repeat, and it passes the Vertical Line Test for functions. Graphs that are composed of a series of dots, instead of a connected curve, are referred to as discrete graphs. A discrete domain is a set of input values that consist of only certain numbers in an interval. State the domain and range associated with the graph below. State whether this relation is a function.

At negative 1, it starts getting defined. So it's defined for negative 1 is less than or equal to x. And it's defined all the way up to x equals 7, including x equals 7. So this right over here, negative 1 is less than or equal to x is less than or equal to 7, the function is defined for any x that satisfies this double inequality right over here.

Let's do a few more.

## Worked example: domain and range from graph

What is its range? So now, we're not thinking about the x's for which this function is defined. We're thinking about the set of y values. Where do all of the y values fall into? The lowest possible y value or the lowest possible value of f of x that we get here looks like it's 0.

- Algebra Examples
- Domain and Range of a Relation

The function never goes below 0. So f of x-- so 0 is less than or equal to f of x.

### Algebra Examples | Relations | Finding the Domain and Range of the Relation

It does equal 0 right over here. And then the highest y value or the highest value that f of x obtains in this function definition is 8. It never gets above 8, but it does equal 8 right over here when x is equal to 7.

So 0 is less than f of x, which is less than or equal to 8. So that's its range. This is kind of fun. So once again, this function is defined for negative 2.

Negative 2 is less than or equal to x, which is less than or equal to 5. If you give me an x anywhere in between negative 2 and 5, I can look at this graph to see where the function is defined. So on and so forth, and I can even pick the values in between these integers.