What is a function?
Function Concepts Unit 2 iReady Alg Pre Test

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Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation that assigns exactly one output for each input. In other words, for every x-value, there is one and only one corresponding y-value.
2.
FLASHCARD QUESTION
Front
What is the definition of domain in a function?
Back
The domain of a function is the set of all possible input values (x-values) that the function can accept.
3.
FLASHCARD QUESTION
Front
What is the definition of range in a function?
Back
The range of a function is the set of all possible output values (y-values) that the function can produce.
4.
FLASHCARD QUESTION
Front
How can you determine if a mapping is a function?
Back
A mapping is a function if no x-value is paired with more than one y-value. If any x-value corresponds to multiple y-values, it is not a function.
5.
FLASHCARD QUESTION
Front
What is the equation for Juanita's monthly cell phone bill if she uses x minutes of airtime?
Back
C = 0.20x + 15, where C is the total cost.
6.
FLASHCARD QUESTION
Front
What is the characteristic of a linear function?
Back
A linear function is represented by a straight line on a graph.
7.
FLASHCARD QUESTION
Front
What does it mean for a relationship to be 'not a function'?
Back
A relationship is 'not a function' if at least one input (x-value) is associated with more than one output (y-value).
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