Khan Academy: Checking if a Table Represents a Function

Time to show what you know about functions! The review concludes a series of nine lessons on the basics of functions. The problems included are modeled from the previous lessons. Pupils determine if a table represents a function,...

This comprehensive unit on linear and exponential functions provides numerous clearly-written worksheets. Topics include graphing linear equations, solving systems of equations algebraically and by graphing, identifying the domain and...

This short video looks at different points on a coordinate plane and answers a question about whether these points could represent a function. The answer is determined by looking at each point individually to determine whether, given a...

The short example shown in this video starts with a given set of numbers in the domain and the range that represents a function. One needs to map the points on a coordinate plane.

Extending his asymptotes lesson from the previous video, Sal shows viewers another example of graphing rational functions. This video is shorter than the previous one and could be shown in a single class session.

Sal finds the y-intercept of the graph of a linear function given a table of values. [3:59]

Find the intercepts of a line given a table of values. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

A video exploring whether a function is represented by a given set of points. [4:06]

Examine the relationship between the input and output variables in a table of values. As learners build an input-output table using online manipulatives, they begin to identify patterns. They answer questions about these patterns...

In this exercise, students practice intercepts of a line from a table. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.