Functions
Flashcard
•
Mathematics
•
8th - 9th 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 that assigns exactly one output value for each input value.
2.
FLASHCARD QUESTION
Front
What is the definition of 'not a function'?
Back
A relation is not a function if at least one input value is associated with more than one output value.
3.
FLASHCARD QUESTION
Front
Given the relation {(1,5),(1,7),(3,9),(4,11)}, is it a function?
Back
No, because the input '1' is associated with two different outputs (5 and 7).
4.
FLASHCARD QUESTION
Front
How can you determine if a graph represents a function?
Back
A graph represents a function if any vertical line drawn through the graph intersects it at most once.
5.
FLASHCARD QUESTION
Front
What does the vertical line test indicate?
Back
The vertical line test is a method to determine if a curve is a graph of a function. If a vertical line crosses the graph more than once, it is not a function.
6.
FLASHCARD QUESTION
Front
Is the set of ordered pairs {(2,3),(3,4),(4,5)} a function?
Back
Yes, because each input value is associated with exactly one output value.
7.
FLASHCARD QUESTION
Front
What is an example of a function?
Back
An example of a function is f(x) = 2x + 3, where each input x has a unique output.
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