Identifying Functions
Flashcard
•
Mathematics
•
8th Grade
•
Hard
Wayground Content
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16 questions
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation where every input has only ONE output.
2.
FLASHCARD QUESTION
Front
Which of the following represents a function? A: {(1,2), (2,3), (3,4)}, B: {(1,2), (1,3)}, C: {(2,3), (3,4)}, D: {(4,5), (5,6)}
Back
A: {(1,2), (2,3), (3,4)} is a function because each input has a unique output.
3.
FLASHCARD QUESTION
Front
What is the definition of a function in terms of ordered pairs?
Back
In ordered pairs, a function is a set where no two pairs have the same first element.
4.
FLASHCARD QUESTION
Front
Identify the function: {(1,2), (2,3), (3,4)}, {(1,2), (1,3)}, {(2,3), (2,4)}
Back
The function is {(1,2), (2,3), (3,4)} because each input is unique.
5.
FLASHCARD QUESTION
Front
Which set of ordered pairs is a function? {(9,5), (10,5), (9,-5), (10,-5)}, {(3,4), (4,-3), (7,4), (3,8)}, {(6,-5), (7,-3), (8,-1), (9,1)}, {(2,-2), (5,9), (5,-7), (1,4)}
Back
The function is {(6,-5), (7,-3), (8,-1), (9,1)} because each input is unique.
6.
FLASHCARD QUESTION
Front
What is the vertical line test?
Back
The vertical line test is a method to determine if a curve is a function. If a vertical line intersects the curve at more than one point, it is not a function.
7.
FLASHCARD QUESTION
Front
If f(x) = 2x + 3, what is f(2)?
Back
f(2) = 2(2) + 3 = 7.
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