Function or Not a Function?
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
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 the vertical line test?
Back
The vertical line test is a method to determine if a graph represents a function. If a vertical line intersects the graph at more than one point, it is not a function.
3.
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-value) is associated with more than one output (y-value).
4.
FLASHCARD QUESTION
Front
Give an example of a function.
Back
An example of a function is the relation {(1, 2), (2, 3), (3, 4)} where each input has a unique output.
5.
FLASHCARD QUESTION
Front
Give an example of a relation that is not a function.
Back
An example of a relation that is not a function is {(1, 2), (1, 3), (2, 4)} because the input '1' has two different outputs.
6.
FLASHCARD QUESTION
Front
What is a mapping in mathematics?
Back
A mapping is a way to describe how each element of one set (domain) is paired with an element of another set (range).
7.
FLASHCARD QUESTION
Front
How can you tell if a set of ordered pairs is a function?
Back
A set of ordered pairs is a function if no two pairs have the same first element (x-value).
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