What is a function?
Function/Not a Function Day 2

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•
Mathematics
•
9th - 10th 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 definition of 'not a function'?
Back
A relation is not a function if at least one input (x-value) has more than one output (y-value).
3.
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.
4.
FLASHCARD QUESTION
Front
What does it mean if a graph passes the vertical line test?
Back
If a graph passes the vertical line test, it means that for every x-value, there is only one corresponding y-value, indicating it is a function.
5.
FLASHCARD QUESTION
Front
What is an ordered pair?
Back
An ordered pair is a pair of numbers (x, y) that represents a point on a graph, where 'x' is the input and 'y' is the output.
6.
FLASHCARD QUESTION
Front
Can a function have the same output for different inputs?
Back
Yes, a function can have the same output for different inputs, as long as each input has only one output.
7.
FLASHCARD QUESTION
Front
What is an example of a function?
Back
An example of a function is f(x) = 2x + 3, where each x-value has a unique y-value.
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