Identifying Functions

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation where each input (x-value) has exactly one output (y-value).
2.
FLASHCARD QUESTION
Front
How can you tell if a table represents a function?
Back
A table represents a function if no x-values are repeated.
3.
FLASHCARD QUESTION
Front
What does it mean if a mapping has repeated x-values?
Back
If a mapping has repeated x-values, it is not a function because one input cannot have multiple outputs.
4.
FLASHCARD QUESTION
Front
What are ordered pairs?
Back
Ordered pairs are pairs of numbers (x, y) that represent coordinates on a graph.
5.
FLASHCARD QUESTION
Front
Do the ordered pairs (1, 2), (2, 3), (3, 4) represent a function?
Back
Yes, because each x-value is unique.
6.
FLASHCARD QUESTION
Front
Do the ordered pairs (1, 2), (1, 3), (2, 4) represent a function?
Back
No, because the x-value '1' is associated with two different y-values.
7.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test states that if a vertical line intersects a graph at more than one point, the graph does not represent a function.
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