www.khanacademy.org/math/algebra/algebra-functions/domain-and-range/v/range-of-a-function

Sal introduces the concept of "**range" of a function** and gives examples for
**functions** and their **ranges**.

www.khanacademy.org/math/algebra-home/alg-functions/alg-determining-the-range-of-a-function/a/finding-range-of-quadratic-functions

**Finding the range of a function**, just by looking at its formula, is pretty difficult!
Actually, it's not even that easy to tell whether a single specific value is a possible
...

www.purplemath.com/modules/fcns2.htm

Discusses the domain and **range of a function**, and **how to find** the domain and
**range** from a list of points or from a graph.

www.varsitytutors.com/hotmath/hotmath_help/topics/domain-and-range-of-rational-functions

The domain of a **function** f(x) is the set of all values for which the **function** is ...
One way of **finding the range** of a rational **function** is by **finding** the domain of the
...

www.wikihow.com/Find-the-Range-of-a-Function-in-Math

**How to Find the Range of a Function** in Math. The range of a function is the set of
numbers that the function can produce. In other words, it is the set of y-values ...

www.intmath.com/functions-and-graphs/2a-domain-and-range.php

When **finding** the domain, remember: ... The **range of a function** is the complete
set of all possible resulting values of the dependent variable (y, usually), after we
...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U17_L2_T3_text_final.html

**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 ...

learnzillion.com/lesson_plans/8325-find-the-domain-and-range-of-a-function

In this lesson you will learn how to determine the domain or **range of a function**
by considering sets, graphs, equations, and mappings.