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# identify which matrix you would multiply both sides by to solve the system of equation above

|3 6|   |x|     |2|

x      =

|2 7|    |y|    |3|

a. |1/3  1/6|     b. |1/2|    c. |7/9 -6/9|   d. |1/2 1/3|

|1/2 1/7|         |1/3|        |-2/9 3/9|

### 2 Answers by Expert Tutors

Maurizio T. | Statistics Ph.D and CFA charterholder with a true passion to teach.Statistics Ph.D and CFA charterholder wi...
5.0 5.0 (325 lesson ratings) (325)
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Marked as Best Answer

Robert gave you the right answer in terms of solutions for x and y.

The matrix that your problem is asking for is given by

| 7/9  -6/9|

|-2/9  3/9 |

Robert J. | Certified High School AP Calculus and Physics TeacherCertified High School AP Calculus and Ph...
4.6 4.6 (13 lesson ratings) (13)
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Using inverse matrix, the answer is (-4/9, 5/9).

|3 6| -1    |2|...........|-4/9|

............*.........  =

|2 7|        |3|............|5/9|

so what is it answer a? b? c? or d?

|3 6| -1

|2 7|

=

|7 -6|

|-2 3|/(3*7-6*2)

= c