# Vertical Line Test

## Not a function if a vertical line crosses graph in 2+ places

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Recognizing Functions

by CK-12 //at grade
Learn how to determine whether or not a relation is a function.
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1

## Vertical Line Test

Learn how to determine whether or not a relation is a function.
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## Vertical Line Test- 1

by Diana Johnson //at grade
Learn how to determine whether or not a relation is a function.
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• PLIX

## Exploration

by CK-12 //at grade
Vertical Line Test Interactive
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• 0
• Critical Thinking

## Vertical Line Test Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Vertical Line Test.
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• Real World Application

## Hospital Monitor

by CK-12 //at grade
Students research the purpose of hospital monitors and make connections to Algebraic functions and prove that they represent functions.
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