5.1: Intro to Functions
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation that assigns exactly one output for each input. In other words, for every x-value, there is one and only one corresponding y-value.
Tags
CCSS.8.F.A.1
2.
FLASHCARD QUESTION
Front
What is not a function?
Back
A relation is not a function if at least one input is associated with more than one output. For example, the relation {(1, 2), (1, 3)} is not a function because the input 1 has two different outputs.
Tags
CCSS.8.F.A.1
3.
FLASHCARD QUESTION
Front
Identify if the following set of values is a function: (9,5), (10,5), (9,-5), (10,-5)
Back
Not a Function - The input 9 has two different outputs (5 and -5).
Tags
CCSS.8.F.A.1
4.
FLASHCARD QUESTION
Front
Identify if the following set of values is a function: (3,4), (4,-3), (7,4), (3,8)
Back
Not a Function - The input 3 has two different outputs (4 and 8).
Tags
CCSS.8.F.A.1
5.
FLASHCARD QUESTION
Front
Identify if the following set of values is a function: (6,-5), (7,-3), (8,-1), (9,1)
Back
Function - Each input has a unique output.
Tags
CCSS.8.F.A.1
6.
FLASHCARD QUESTION
Front
Which ordered pair can be added to the list (3, 5), (4, 9), (2, 5) to create a function?
Back
(1, 9) - This pair does not repeat any x-values from the existing pairs.
Tags
CCSS.8.F.A.1
CCSS.HSF.IF.A.1
7.
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 any vertical line intersects the curve at more than one point, then the curve is not a function.
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