Relation vs. Function

Flashcard
•
Mathematics
•
8th - 10th 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 every input (x-value) has exactly one output (y-value).
2.
FLASHCARD QUESTION
Front
Is the mapping (2,3), (2,4) a function?
Back
Not a Function - The input 2 has two different outputs (3 and 4).
3.
FLASHCARD QUESTION
Front
Is the mapping (1,2), (3,4), (5,6) a function?
Back
Function - Each input has a unique output.
4.
FLASHCARD QUESTION
Front
What is the definition of relation?
Back
A relation is a set of ordered pairs, which can include functions but does not require that each input has a unique output.
5.
FLASHCARD QUESTION
Front
Which of the following is a function? (1,2), (1,3), (2,2)
Back
Not a Function - The input 1 has two outputs (2 and 3).
6.
FLASHCARD QUESTION
Front
Which of the following is a function? (1,2), (2,3), (3,4)
Back
Function - Each input has a unique output.
7.
FLASHCARD QUESTION
Front
What is an example of a function?
Back
An example of a function is f(x) = 2x + 1, where each x-value gives one y-value.
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