Is it a Function?

Flashcard
•
Mathematics
•
8th - 9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function in mathematics?
Back
A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.
2.
FLASHCARD QUESTION
Front
How can you determine if a relation is a function?
Back
A relation is a function if every input (x-value) has exactly one output (y-value). This can be checked using the vertical line test on a graph.
3.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test is a method to determine if a curve is a function. If a vertical line intersects the curve at more than one point, then the curve is not a function.
4.
FLASHCARD QUESTION
Front
What is a mapping in the context of functions?
Back
A mapping is a way to describe a function, showing how each element of the domain (input) is paired with an element of the codomain (output).
5.
FLASHCARD QUESTION
Front
What does it mean for a graph to represent a function?
Back
A graph represents a function if for every x-coordinate, there is only one corresponding y-coordinate.
6.
FLASHCARD QUESTION
Front
Can a function have multiple outputs for a single input?
Back
No, a function cannot have multiple outputs for a single input. Each input must map to exactly one output.
7.
FLASHCARD QUESTION
Front
What is the domain of a function?
Back
The domain of a function is the set of all possible input values (x-values) for which the function is defined.
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