What is a function in mathematics?
Functions (ordered pairs & tables)

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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) for each input (x).
2.
FLASHCARD QUESTION
Front
What is an ordered pair?
Back
An ordered pair is a pair of numbers (x, y) that represent a point in a coordinate system.
3.
FLASHCARD QUESTION
Front
How can you determine if y is a function of x from a set of ordered pairs?
Back
y is a function of x if each x-value corresponds to exactly one y-value.
4.
FLASHCARD QUESTION
Front
What does it mean for a relation to not be a function?
Back
A relation is not a function if at least one x-value corresponds to more than one y-value.
5.
FLASHCARD QUESTION
Front
What is a table of values in relation to functions?
Back
A table of values lists pairs of x and y values, showing how y changes with x.
6.
FLASHCARD QUESTION
Front
Given the ordered pairs (1, 2), (2, 3), (1, 4), is y a function of x?
Back
No, because the x-value 1 corresponds to two different y-values (2 and 4).
7.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test states that if a vertical line intersects a graph at more than one point, the relation is not a function.
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