Identifying Functions

Flashcard
•
Mathematics
•
8th 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 that assigns exactly one output for each input.
2.
FLASHCARD QUESTION
Front
What does it mean for a mapping to represent a function?
Back
A mapping represents a function if each input is paired with exactly one output.
3.
FLASHCARD QUESTION
Front
How can you tell if a set of ordered pairs represents a function?
Back
A set of ordered pairs represents a function if no two pairs have the same first element with different second elements.
4.
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.
5.
FLASHCARD QUESTION
Front
Does the following mapping represent a function? {(1, 2), (1, 3)}
Back
No, because the input '1' is paired with two different outputs.
6.
FLASHCARD QUESTION
Front
Does the following table represent a function? Input: 1, 2, 3 Output: 4, 4, 5
Back
Yes, because each input has exactly one output.
7.
FLASHCARD QUESTION
Front
Does the following graph represent a function? (0, 1), (1, 2), (2, 3), (3, 4)
Back
Yes, because each x-value is unique.
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