Solve the System of Equations by the Substitution Method $- 9 x + y = 5$

question 94

Multiple Choice

Solve the system of equations by the substitution method.
- $- 9 x + y = 5$
$- 3 x - 4 y = - 7$

• A) \(\left\{ \left( - 4 , - \frac { 3 } { 2 } \right) \right\}\)
• B) \(\{ ( 1 , - 1 ) \}\)
• C) \(\left\{ \left( - \frac { 1 } { 3 } , 2 \right) \right\}\)
• D) \(\left\{ \left( \frac { 2 } { 3 } , 11 \right) \right\}\)

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Definitions:

Beginning Inventory

The price of items on offer for purchase at the onset of an accounting cycle.

Markup

An addition to the purchase cost of items intended to cover both operational costs and generate a profit.

Net Sales

The revenue from sales transactions after subtracting returns, allowances for damaged or missing goods, and discounts.

Average Inventory

Calculated by adding the value of the inventory at the beginning and end of a period and dividing by two, reflecting an average amount of inventory held over the period.