Domain and Range
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A relation where each input (x-value) has exactly one output (y-value).
2.
FLASHCARD QUESTION
Front
What is the definition of domain?
Back
The set of all possible input values (x-values) for a function.
3.
FLASHCARD QUESTION
Front
What is the definition of range?
Back
The set of all possible output values (y-values) for a function.
4.
FLASHCARD QUESTION
Front
Is the relation {(1,2), (1,3)} a function?
Back
No, because the x-value 1 has two different y-values (2 and 3).
5.
FLASHCARD QUESTION
Front
Identify the domain of the function f(x) = x^2 - 4.
Back
The domain is all real numbers, or (-∞, ∞).
6.
FLASHCARD QUESTION
Front
Identify the range of the function f(x) = x^2 - 4.
Back
The range is all real numbers greater than or equal to -4, or [-4, ∞).
7.
FLASHCARD QUESTION
Front
What is the domain of the function represented by the set {(0,1), (1,-3), (2,-4), (-4,1)}?
Back
The domain is {0, 1, 2, -4}.
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