Identify Functions
Flashcard
•
Mathematics
•
7th - 9th Grade
•
Hard
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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
What is not a function?
Back
A relation is not a function if at least one input (x-value) has more than one output (y-value).
3.
FLASHCARD QUESTION
Front
Is the relation (2,3), (2,4), (3,5) a function?
Back
No, because the x-value 2 has two different y-values (3 and 4).
4.
FLASHCARD QUESTION
Front
Is the relation (1,2), (2,3), (3,4) a function?
Back
Yes, because each x-value has only one y-value paired with it.
5.
FLASHCARD QUESTION
Front
What does it mean for a set of ordered pairs to represent a function?
Back
It means that for every x-value in the set, there is only one corresponding y-value.
6.
FLASHCARD QUESTION
Front
How can you determine if a table represents a function?
Back
Check if any x-value in the table is repeated; if it is, then it is not a function.
7.
FLASHCARD QUESTION
Front
Which of the following is a function: (1,2), (1,3), (2,4) or (1,2), (2,3), (2,4)?
Back
(1,2), (2,3), (2,4) is not a function because the x-value 2 has multiple y-values.
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