Functions

Flashcard
•
Mathematics
•
8th - 12th 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
How can you determine if a graph represents a function?
Back
Use the vertical line test: 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 not be a function?
Back
A relation is not a function if at least one x-value is paired with more than one y-value.
4.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
A method to determine if a graph is a function by checking if any vertical line crosses the graph more than once.
5.
FLASHCARD QUESTION
Front
What is a mapping diagram?
Back
A visual representation of a function that shows how each input is paired with an output.
6.
FLASHCARD QUESTION
Front
If a relation has the pairs (2, 3), (2, 4), (3, 5), is it a function?
Back
No, because the x-value 2 has two different y-values (3 and 4).
7.
FLASHCARD QUESTION
Front
What is the domain of a function?
Back
The set of all possible input values (x-values) for the function.
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