What is a function in mathematics?
Is This a Function?

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•
Mathematics
•
8th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation that assigns exactly one output (y-value) for each input (x-value).
2.
FLASHCARD QUESTION
Front
How can you determine if a relation is a function using a table?
Back
A relation is a function if each x-value in the table corresponds to only one y-value.
3.
FLASHCARD QUESTION
Front
What does it mean if a graph fails the vertical line test?
Back
If a vertical line intersects the graph at more than one point, the relation is not a function.
4.
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 by checking if any vertical line crosses the graph more than once.
5.
FLASHCARD QUESTION
Front
Can a function have the same y-value for different x-values?
Back
Yes, a function can have the same y-value for different x-values, as long as each x-value corresponds to only one y-value.
6.
FLASHCARD QUESTION
Front
What is an example of a function?
Back
An example of a function is the relation {(1, 2), (2, 3), (3, 4)}.
7.
FLASHCARD QUESTION
Front
What is an example of a relation that is not a function?
Back
An example of a relation that is not a function is {(1, 2), (1, 3)} because the x-value 1 has two different y-values.
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