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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