Relations and Functions
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Simplify: 20n + 4 + 5 + 7n
Back
27n + 9
2.
FLASHCARD QUESTION
Front
What is a function?
Back
A relation where each input has exactly one output.
3.
FLASHCARD QUESTION
Front
Is the relation {(1, 2), (2, 3), (1, 4)} a function?
Back
Not a Function (1 is associated with two outputs: 2 and 4).
4.
FLASHCARD QUESTION
Front
Is the relation {(1, 2), (2, 3), (3, 4)} a function?
Back
Function (each input has a unique output).
5.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
A method to determine if a relation is a function; if a vertical line intersects the graph at more than one point, it is not a function.
6.
FLASHCARD QUESTION
Front
If f(x) = 2x + 3, what is f(2)?
Back
f(2) = 2(2) + 3 = 7.
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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