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Chapter 3: Q. 3.92 (page 319)

Use the mapping to 鈸� determine whether the relation is a function 鈸� find the domain of the relation 鈸� find the range of the relation.

Short Answer

Expert verified

(a) The given relation is not a function.

(b) The domain of the relation is the set of Name.

(c) The range of the relation is the set of Phone Number.

Step by step solution

01

Step 1. Given Information

We are given the ordered pairsName,PhoneNumber

02

Part (a) Step 1. Check for function

The given relation is not a function because George corresponds to two Phone number.

In function, a preimage has only one image.

03

Part (b). Step 1. Domain of the relation

The domain is the set of first coordinate of ordered pairs that is name.

D=Neil,Krystal,kelvin,George,Christa,Mike

04

Part (c). Step 1. Finding Range

The range of the relation is the set of second coordinate of ordered pairs.

R=setofphonenumber

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