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.

(1,2), (2,3), (3,1), (4,4), (5,2)

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

A. both a relation and a function

Explanation:

This is a relation since it is any set of ordered pairs

Is it a function? It is a function if each input goes to only one output. Each x goes to only one y so it is a function

A. both a relation and a function