What is a function?
5.1: Is This a Function? (Mapping Diagrams)

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation that assigns exactly one output (y) for every input (x).
2.
FLASHCARD QUESTION
Front
True or False: A function can have multiple outputs for a single input.
Back
False
3.
FLASHCARD QUESTION
Front
What is a mapping diagram?
Back
A mapping diagram visually represents the relationship between inputs and outputs in a function.
4.
FLASHCARD QUESTION
Front
Is the following relation a function? (x: 1, 2, 3; y: 4, 5, 5)
Back
Yes, because each x-value has only one y-value paired with it.
5.
FLASHCARD QUESTION
Front
Is the following relation a function? (x: 1, 2, 2; y: 3, 4, 5)
Back
No, because the x-value 2 has two y-values (4 and 5) paired with it.
6.
FLASHCARD QUESTION
Front
What does it mean for a relation to be not a function?
Back
A relation is not a function if at least one input (x) is associated with more than one output (y).
7.
FLASHCARD QUESTION
Front
Function or Relation: (x: 1, 2, 3; y: 2, 2, 2)
Back
Function, because each x-value has only one y-value.
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