Question 1

1.  Find the determinant.

Accepted Answer

$-5$

Answer

$\frac{1}{5}$

Answer

$-1$

Answer

$\frac{-1}{5}$

Question 2

2.  Find the inverse of the matrix.

Accepted Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/1f6ce61f87e0aa40a0a31e1b7f824daad46bbe3c.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/c02fb341359db5c2a81df90087806981b135ce5f.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/b9409350701f9d24b9475568c3fbf1144d50af58.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/70f4ae69817376a2f8fc12288a157b33832795f5.png

Question 3

3.  Find the inverse of the matrix.

Accepted Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/41d715e98aa4e090c35fc44db4c8f4a8dfd4ccc4.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/77baa029c7117ca6ca1b10812748b3e9edd7cb0f.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/9ad3328930dba93349bae6300a5f01a4fa32bb33.png

Answer

https://uploads.quizalize.com/ad3ae995-7743-4852-a6c5-510534f26480/question/a5ea77059fe2631cfa1d3f9014902a1e5fdbe524.png

Question 4

4.  Solve the system using MATRICES!

Accepted Answer

(-2, -4)

Answer

(-4, -2)

Answer

(2, 4)

Answer

no solution

Question 5

5.  Solve the system using ELIMINATION!

Accepted Answer

(-2, -4)

Answer

(-4, -2)

Answer

(2, 4)

Answer

no solution

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