Grade 8 Math · Functions

Identify functions from tables

Classify the input-output table as Function or Not a function.

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What you’ll learn

Classify the input-output table as Function or Not a function.

Key idea

Different inputs can share one output in a function.

Worked example

Classify the input-output table as Function or Not a function.

input/output relation

xy(-1, 5)(0, 5)(1, 5)
Given values
inputoutput
-15
05
15
  1. Function

Answer: Function

Quick Check

Classify the input-output table as Function or Not a function.

input/output relation

xy(-1, -1)(0, -1)(1, -1)
Given values
inputoutput
-1-1
0-1
1-1
Choose one answer

Show a hint

Scan the input column for a repeated input.