Define a Relation $R$ From $\{ a , b , c \}$

question 7

Essay

Define a relation $R$ from $\{ a , b , c \}$ to $\{ u , v \}$ as follows: $R = \{ ( a , v ) , ( b , u ) , ( b , v ) , ( c , u ) \}$ .
(a) Draw an arrow diagram for $R$ .
(b) Is $R$ a function? Why or why not?

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Definitions:

Break-Even Point

The level of sales at which total revenues equal total costs, resulting in no net loss or gain.

Sales Mix

The composition of a company’s product or service sales, showing the relative proportions of each product or service sold.

Net Income

The total revenue minus total expenses, indicating the profitability of a company over a specific period.

Contribution Margin Ratio

The ratio of Contribution Margin to Sales Revenue, measuring the percentage of each sales dollar available to cover fixed costs and profit.