Functions- Review
Flashcard
•
Mathematics
•
6th - 9th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation that assigns exactly one output for each input.
Tags
CCSS.8.F.A.1
2.
FLASHCARD QUESTION
Front
What is the notation for a function?
Back
Functions are often written as f(x), where 'f' is the function name and 'x' is the input.
Tags
CCSS.8.F.A.1
CCSS.HSF.IF.A.1
3.
FLASHCARD QUESTION
Front
What does f(2) = 8 mean?
Back
It means that when the input is 2, the output of the function f is 8.
Tags
CCSS.8.F.A.1
CCSS.HSF.IF.A.1
4.
FLASHCARD QUESTION
Front
What is the difference between a function and a relation?
Back
A function is a specific type of relation where each input has exactly one output.
Tags
CCSS.8.F.A.1
5.
FLASHCARD QUESTION
Front
What does it mean if a mapping is 'not a function'?
Back
It means that at least one input is associated with more than one output.
Tags
CCSS.8.F.A.1
6.
FLASHCARD QUESTION
Front
How can you determine if a relation is a function using a graph?
Back
Use the vertical line test: if a vertical line crosses the graph more than once, it is not a function.
7.
FLASHCARD QUESTION
Front
What is the output of f(2) if f(x) = 4x - 2?
Back
The output is 6, since f(2) = 4(2) - 2 = 8 - 2 = 6.
Tags
CCSS.HSF.IF.A.2
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