Function or Not? Vertical Line Test Graphs Worksheet

Description

Function or Not? Vertical Line Test Graphs Worksheet

Help your students confidently identify functions using the vertical line test!
This engaging worksheet includes 16 graphs where students decide if each relation is a function and explain their reasoning in writing.

Perfect for Algebra 1 and 8th Grade Math, this resource reinforces the connection between graphs and function rules with clear, visual examples.

What’s Included

16 unique graphs to analyze
Explanation boxes for student reasoning
Answer key included
No prep — ready to print and use

Skills Covered

Applying the vertical line test to determine if a relation is a function
Identifying input-output relationships visually
Explaining why a graph is or is not a function
Understanding domain and range connections

Best For

Classwork or homework practice
Quick warm‑ups or exit tickets
Function review or checks for understanding

Standards Alignment

CCSS 8.F.A.1 | HSF‑IF.A.1
Students understand that a function assigns exactly one output to each input and passes the vertical line test.

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Function or Not? Vertical Line Test Graphs Worksheet

Name: Function or Not? Vertical Line Test Graphs Worksheet
Brand: Ms New Gen Math
SKU: 16156234
Price: 2.25 USD
Availability: InStock

Ms New Gen Math

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$2.25

Highlights

Digital downloads

PDF

Grades

8th - 9th

Subjects

Algebra, Graphing, Math Test Prep

Standards

CCSS8.F.A.1

CCSSHSF-IF.A.1

Description

Function or Not? Vertical Line Test Graphs Worksheet

Perfect for Algebra 1 and 8th Grade Math, this resource reinforces the connection between graphs and function rules with clear, visual examples.

What’s Included

16 unique graphs to analyze
Explanation boxes for student reasoning
Answer key included
No prep — ready to print and use

Skills Covered

Applying the vertical line test to determine if a relation is a function
Identifying input-output relationships visually
Explaining why a graph is or is not a function
Understanding domain and range connections

Best For

Classwork or homework practice
Quick warm‑ups or exit tickets
Function review or checks for understanding

Standards Alignment

CCSS 8.F.A.1 | HSF‑IF.A.1
Students understand that a function assigns exactly one output to each input and passes the vertical line test.

Report this resource to TPT

Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

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Questions & Answers

Standards

to see state-specific standards (only available in the US).

CCSS8.F.A.1

Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output.

CCSSHSF-IF.A.1

Understand that a function from one set (called the domain) to another set (called the range) assigns to each element of the domain exactly one element of the range. If 𝘧 is a function and 𝘹 is an element of its domain, then 𝘧(𝘹) denotes the output of 𝘧 corresponding to the input 𝘹. The graph of 𝘧 is the graph of the equation 𝘺 = 𝘧(𝘹).