What is a function?
QSE 2 Review

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.
2.
FLASHCARD QUESTION
Front
How can you determine if a relation is a function?
Back
A relation is a function if every input (x-value) has exactly one output (y-value). This can be checked using the vertical line test on a graph.
3.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test is a method to determine if a curve is a graph of a function. If a vertical line intersects the graph at more than one point, then the graph does not represent a function.
4.
FLASHCARD QUESTION
Front
What are the characteristics of a right triangle?
Back
A right triangle has one angle that measures 90 degrees. The sides opposite the right angle is called the hypotenuse, and the other two sides are called the legs.
5.
FLASHCARD QUESTION
Front
What is the Pythagorean theorem?
Back
The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): c² = a² + b².
6.
FLASHCARD QUESTION
Front
What does it mean for a table to represent a function?
Back
A table represents a function if each input value corresponds to exactly one output value.
7.
FLASHCARD QUESTION
Front
What is an example of a non-function?
Back
An example of a non-function is the relation {(1, 2), (1, 3)}, where the input 1 corresponds to two different outputs.
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