Relations and Functions Mini-Flashcard

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
Which relation is NOT a function? Options: {(1,-5), (3,1), (-5,4), (4,-2)}, {(2,7), (3,7), (4,7), (5,8)}, {(1,-5), (-1,6), (1,5), (6,-3)}, {(3,-2), (5,-6), (7,7), (8,8)}
Back
Answer: {(1,-5), (-1,6), (1,5), (6,-3)} - A function cannot have two different outputs for the same input.
2.
FLASHCARD QUESTION
Front
A relation where each x value has exactly one y value is a: Options: range, inequality, function, equation
Back
Answer: function - A function is defined as a relation where each input (x) has a unique output (y).
3.
FLASHCARD QUESTION
Front
Is the following a Function? Explain: (You may need to click on the picture to see it better) Options: Yes; Each input has exactly one output., Yes; At least one input has more than one output., No; Each input has exactly one output., No; At least one input has more than one output.
Back
Answer: Yes; Each input has exactly one output.
4.
FLASHCARD QUESTION
Front
Is this a function? Options: Yes, No
Back
Answer: No - A function must have only one output for each input.
5.
FLASHCARD QUESTION
Front
Is this mapping a function or not a function? Options: Function, Not a Function
Back
Answer: Not a Function - A mapping is not a function if at least one input has multiple outputs.
6.
FLASHCARD QUESTION
Front
What is a function?
Back
A function is a relation that assigns exactly one output for each input.
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 a vertical line intersects the curve at more than one point, it is not a function.
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