Identifying Functions

Identifying Functions

Assessment

Flashcard

Mathematics

8th Grade

Hard

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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.

2.

FLASHCARD QUESTION

Front

How can you tell if a set of ordered pairs represents a function?

Back

A set of ordered pairs represents a function if no two pairs have the same first element with different second elements.

3.

FLASHCARD QUESTION

Front

Does the following set of ordered pairs represent a function: {(1, 2), (1, 3), (2, 4)}?

Back

No, because the first element '1' is paired with two different second elements '2' and '3'.

4.

FLASHCARD QUESTION

Front

Does the following set of ordered pairs represent a function: {(1, 2), (2, 3), (3, 4)}?

Back

Yes, because each first element is paired with exactly one second element.

5.

FLASHCARD QUESTION

Front

What is a mapping diagram?

Back

A mapping diagram visually represents a function by showing how each input is paired with an output.

6.

FLASHCARD QUESTION

Front

Does the following mapping represent a function: {1 -> 2, 1 -> 3, 2 -> 4}?

Back

No, because the input '1' is mapped to two different outputs '2' and '3'.

7.

FLASHCARD QUESTION

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a graph represents a function; if a vertical line intersects the graph at more than one point, it is not a function.

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