Vertical Line Test

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Vertical Line Test?
Back
A method used to determine if a graph represents a function. If any vertical line intersects the graph at more than one point, the graph does not represent a function.
2.
FLASHCARD QUESTION
Front
What does it mean for a graph to be a function?
Back
A graph is a function if every input (x-value) has exactly one output (y-value).
3.
FLASHCARD QUESTION
Front
What does it mean for a graph to not be a function?
Back
A graph is not a function if at least one input (x-value) has more than one output (y-value).
4.
FLASHCARD QUESTION
Front
If a vertical line intersects a graph at two points, what can we conclude?
Back
The graph does not represent a function.
5.
FLASHCARD QUESTION
Front
Can a horizontal line test determine if a graph is a function?
Back
No, the horizontal line test determines if a function is one-to-one, not if it is a function.
6.
FLASHCARD QUESTION
Front
What is an example of a function?
Back
The equation y = 2x + 3 is a function because for every x-value, there is one corresponding y-value.
Tags
CCSS.8.F.A.1
7.
FLASHCARD QUESTION
Front
What is an example of a graph that is not a function?
Back
The graph of a circle, such as x^2 + y^2 = r^2, is not a function because a vertical line can intersect it at two points.
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