Relations and Functions
Flashcard
•
Mathematics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a relation in mathematics?
Back
A relation is a set of ordered pairs, where each pair consists of an input (x) and an output (y).
2.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a special type of relation where each input has exactly one output.
3.
FLASHCARD QUESTION
Front
List the ordered pairs for the function f(x) = 2x + 1 for x = 0, 1, 2, 3.
Back
(0, 1), (1, 3), (2, 5), (3, 7)
4.
FLASHCARD QUESTION
Front
What does it mean for a relation to be a function?
Back
It means that for every input value, there is one and only one output value.
5.
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 intersects the graph at more than one point, the relation is not a function.
6.
FLASHCARD QUESTION
Front
What are ordered pairs?
Back
Ordered pairs are pairs of numbers written in the form (x, y), where x is the input and y is the output.
7.
FLASHCARD QUESTION
Front
What is the domain of a function?
Back
The domain is the set of all possible input values (x) for the function.
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