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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.
- −2x−6y=−2 -2 x-6 y=-2
2x−y=−5 2 x-y=-5


A) (−1,2) (-1,2)
B) (1,−2) (1,-2)
C) (−2,1) (-2,1)
D) (2,−1) (2,-1)

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