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The mapping shows a relationship between input and output values.

A mapping diagram shows a relation, using arrows, between input and output for the following ordered pairs: (negative 5, 0), (2, negative 3), (negative 1, negative 3), (4, negative 2), (4, 2), (6, negative 1).
Which ordered pair could be removed to make this relation a function?
(–5, 0)
(–1, –3)
(4, –2)
(6, –1)

User Jon Preece
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2 Answers

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Answer: (4, –2)

Explanation:

The mapping shows a relationship between input and output values. A mapping diagram-example-1
User Graham Lea
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5 votes

Answer:

(4, –2)

Explanation:

A function has associated only one output for each input. In the ordered pairs, we can see that for the input 4 there are two associated outputs, which are -2 and 2. Then, to make the relation a function, one of them must be removed.

User Gregor Isack
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