Rachel likes to read books. she records the number of books she read over a period of 5 weeks. the set of ordered pairs below gives the details, where the x-coordinate is the number of weeks since she starts recording and the y-coordinate is the number of books she read each week.

which of the following describes the set of ordered pairs?
a. both a relation and a function
b. a function only
c. neither a function nor a relation
d. a relation only

A. both a relation and a function

Step-by-step explanation:

The given set of ordered pairs is

{(1,2),(2,3),(3,1),(4,4),(5,2)}.

This ordered pairs represent a relation.

The x-coordinates represent the domain and the co-domain or range is the set of the y-coordinates.

The relation is many-to-one relation.

All many-to-one relations are functions.

The correct choice is A.

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answer: d.) the total number of protons and neutrons is 15

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