What is the domain of a relation?
Domain, Range, and Functions

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Mathematics
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The set of all x-values.
2.
FLASHCARD QUESTION
Front
What is a function?
Back
A relation where each input (x-value) has exactly one output (y-value).
3.
FLASHCARD QUESTION
Front
What is the range of a function?
Back
The set of all y-values that result from the function.
4.
FLASHCARD QUESTION
Front
Is the following relation a function? (x: 1, 2, 3; y: 4, 5, 5)
Back
Function (each x-value has one y-value).
5.
FLASHCARD QUESTION
Front
Is the following relation a function? (x: 1, 2, 2; y: 3, 4, 5)
Back
Not a Function (the x-value 2 has two different y-values).
6.
FLASHCARD QUESTION
Front
What is the range of the set of points {(1, 2), (2, 3), (3, 4)}?
Back
{2, 3, 4}.
7.
FLASHCARD QUESTION
Front
What is the domain of the function f(x) = x^2?
Back
All real numbers.
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