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Vertical Line Test Worksheet

A Grade 8 math worksheet to practice identifying functions using the vertical line test on various graphs.

Grade 8 Math Functions OperationsVertical Line Test
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Includes

True / FalseMultiple ChoiceShort AnswerFill in the Blanks

Standards

CCSS.MATH.CONTENT.8.F.A.1

Topics

mathfunctionsvertical line testgrade 8algebra
6 sections · Free to use · Printable
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Vertical Line Test Worksheet

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Read each question carefully and follow the instructions. Use the vertical line test to determine if the given graph represents a function.

1. The vertical line test is used to determine if a relation is a function.

T

True

F

False

2. If a vertical line intersects a graph at more than one point, the graph represents a function.

T

True

F

False

3. Which of the following graphs represents a function?

-5-4-3-2-112345-5-4-3-2-112345
a
b
c
d

4. Draw a graph that passes the vertical line test.

-5-4-3-2-112345-5-4-3-2-112345

5. Draw a graph that fails the vertical line test.

-5-4-3-2-112345-5-4-3-2-112345

6. Explain in your own words why the vertical line test works.

7. For a graph to be a function, every vertical line must intersect the graph at most   point.

8. The vertical line test helps us determine if a relation has a unique   value for every   value.