Solve the System of Equations by Using the Inverse of the Coefficient

question 9

Multiple Choice

Solve the system of equations by using the inverse of the coefficient matrix if it exists and by the echelon method if the
inverse doesn't exist.
- $-2 x-6 y=-2$
$2 x-y=-5$

• A) \( (-1,2) \)
• B) \( (1,-2) \)
• C) \( (-2,1) \)
• D) \( (2,-1) \)

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Definitions:

Book Value

Book Value is the value of an asset according to its balance sheet account balance, calculated by subtracting liabilities from assets.

Inventory

The basic substances, products under manufacturing, and completed items that form part of a company's assets, which are available or will soon be available for purchase.

Source of Cash

Any activity or operation within a business that generates cash, including operations, financing, and investing activities.

Accounts Receivable Period

The average number of days that it takes for a company to collect payments owed by its customers after a sale has been made.