What is a function?
Unit 6 Review (Functions and scatterplots 8th grade

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation where each input (x-value) has exactly one output (y-value).
2.
FLASHCARD QUESTION
Front
What is the domain of a function?
Back
The domain is the set of all possible input values (x-values) for a function.
3.
FLASHCARD QUESTION
Front
What is the range of a function?
Back
The range is the set of all possible output values (y-values) for a function.
4.
FLASHCARD QUESTION
Front
What does the vertical line test determine?
Back
The vertical line test determines if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.
5.
FLASHCARD QUESTION
Front
What type of association is shown when both variables increase together?
Back
Positive association.
6.
FLASHCARD QUESTION
Front
What type of association is shown when one variable increases while the other decreases?
Back
Negative association.
7.
FLASHCARD QUESTION
Front
What does it mean if there is no association between two variables?
Back
It means that changes in one variable do not affect the other variable.
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