Khan Academy: Algebra: Domain and Range 1

Relations, and functions, and line tests, oh my! An instructional slideshow demonstrates the definitions of a relation, a function, and the domain and range of a relation. Viewers then learn how to use mappings and vertical...

After defining a simple function from a word problem, this video shows how to find the domain and range of that function. The goal is to reinforce the definitions of domain and range with a concrete example.

After defining a simple function from a word problem, a short video shows how one could find the domain and the range of that function. The instruction reinforces the definitions of domain and range with a concrete example.

Video determining the domain and range of a relation given as a table of values. [2:43]

Video graphing a function given the domain and range. [3:08]

Video determining the domain and range of a quadratic function given as an equation written in function notation. Graph of the function is created by finding specific points to help find the range. [8:07]

Sal introduces the concept of "range" of a function and gives examples for functions and their ranges. [6:38]

A straightforward explanation of domain and range. The domain of a set of coordinates are the x-values, and then range are the y-values of the set.

Video determining the domain of a radical function given as an equation written in function notation by setting up and solving an inequality. [1:47]

This video demonstrates how to solve a word problem using an expression and substituting values for a variable. [2:00]