Question

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

Answer 1

Answer:

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.