Khan Academy: Algebra I Worked Examples: Testing if a Relationship Is a Function

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 video resource shows worked examples of algebra concepts. Students watch a detailed problem on how to find the domain and range of a function. [3:34]

The video resource shows worked examples of algebra concepts. Students watch detailed problems on how to find the absolute value of a number using number lines.

The word problem in this video explores systems and rates. Students watch a video example on how to solve a systems of equations and rate word problem. [10:04]

The video examines writing and using inequalities. Students watch an example of how to use an absolute value inequality to solve a word problem. [4:38]

The video examines systems of equations. Students watch an example on how to solve systems by substitution. [3:44]

The word problem explores systems and rates. Students watch a video example on how to solve a system of equations and rate word problem. [2:45]

The video resource [4:06] shows worked examples of algebra concepts. Students watch a detailed problem on how to solve equations.

The video resource [8:02] shows worked examples of algebra concepts. Students watch a detailed problem on how to solve algebraic word problems.

The video resource shows worked examples of algebra concepts. Students watch a detailed problem on how to solve equations. [3:04]