State Whether or Not the Relation Is a Function

question 91

Short Answer

State whether or not the relation is a function.
{(2, 9), (2, 10), (2, 11), (2, 12)}

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Definitions:

Retail Salesperson

An individual who sells goods or services directly to customers in a retail setting, assisting them in finding what they are looking for.

Sales Engineer

A sales engineer is a professional who sells complex scientific and technological products or services to businesses.

Order-Taker

An individual whose role is primarily to take customer orders without actively engaging in sales persuasion or additional selling activities.

Manufacturer's Sales Representative

A salesperson employed directly by a manufacturer to sell and promote its products to potential buyers.