9 1 point 2x1 x 2x 3x3 x 5x1 6x2 8x3 17 The above system of

9. (1 point) 2x1 x 2x 3x3 x. 5x1 6x2 8x3 17 The above system of equations can be rewritten in the form of [A] x2 8 where Xi CAT 1 a) 1 -3

Solution

9. A =
2   1   -2
1   -3   1
5   6   -8

10. The above system of equations has a solution
-1/7
-57/21
0
Therefore, it has 1 solution. So, the answer is (b)

11. This new equation has infinite solutions.
So, the answer is (d).

12. This new equation has 2 solutions.
So, the answer is (c).

13. The first row of the equation is:
a. [-13 6]