Function or not a function

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function in mathematical terms?
Back
A function is a relation where each input (x value) has exactly one output (y value).
Tags
CCSS.8.F.A.1
2.
FLASHCARD QUESTION
Front
What does it mean for a set of ordered pairs to be a function?
Back
A set of ordered pairs is a function if no two different ordered pairs have the same first element (x value).
Tags
CCSS.8.F.A.1
3.
FLASHCARD QUESTION
Front
How can you determine if a relation is a function from a set of ordered pairs?
Back
Check if any x value is repeated; if it is, the relation is not a function.
Tags
CCSS.8.F.A.1
4.
FLASHCARD QUESTION
Front
What is an example of a function using ordered pairs?
Back
(1, 2), (2, 3), (3, 4) is a function because each x value is unique.
Tags
CCSS.8.F.A.1
5.
FLASHCARD QUESTION
Front
What is an example of a relation that is not a function?
Back
(1, 2), (1, 3) is not a function because the x value 1 is associated with two different y values.
Tags
CCSS.8.F.A.1
6.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test is a method to determine if a graph represents a function; if a vertical line intersects the graph at more than one point, it is not a function.
7.
FLASHCARD QUESTION
Front
What is the significance of the ordered pair (-2, 0) in determining functions?
Back
If (-2, 0) is repeated in a set of ordered pairs, it can indicate that the relation is not a function.
Tags
CCSS.8.F.A.1
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