Functions Review

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 that assigns exactly one output (y-value) for each input (x-value).
2.
FLASHCARD QUESTION
Front
Which of the following is not a function? (3,4) (4,-3) (7,4) (3,8)
Back
This set is not a function because the input '3' corresponds to two different outputs: '4' and '8'.
3.
FLASHCARD QUESTION
Front
How do you identify a function from a set of ordered pairs?
Back
A set of ordered pairs is a function if no x-value is repeated with different y-values.
4.
FLASHCARD QUESTION
Front
What is an ordered pair?
Back
An ordered pair is a pair of numbers (x,y) where 'x' is the input and 'y' is the output.
5.
FLASHCARD QUESTION
Front
In the ordered pair (4,9), what is the x-coordinate?
Back
The x-coordinate is 4.
6.
FLASHCARD QUESTION
Front
In the ordered pair (4,9), what is the y-coordinate?
Back
The y-coordinate is 9.
7.
FLASHCARD QUESTION
Front
What does it mean for a mapping to be a function?
Back
A mapping is a function if each input is associated with exactly one output.
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