SOLUTION: Please help me help my kiddo. I don't know what the Gauss=Jordan method is. Thanks so much! Use Gauss-Jordan method to solve. 2x – 3y = -9 2x + 2y = 6

Algebra ->  Matrices-and-determiminant -> SOLUTION: Please help me help my kiddo. I don't know what the Gauss=Jordan method is. Thanks so much! Use Gauss-Jordan method to solve. 2x – 3y = -9 2x + 2y = 6       Log On


   



Question 544151: Please help me help my kiddo. I don't know what the Gauss=Jordan method is. Thanks so much!
Use Gauss-Jordan method to solve.
2x – 3y = -9
2x + 2y = 6

Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
Form the augmented matrix:
2 -3 -9
2 2 6
Perform row operations to obtain the reduced row echelon form of the matrix
R2 - R1
0 5 15
2 2 6
R1/5 and R2/2
0 1 3
1 1 3
R2-R1
0 1 3
1 0 0
Interchange R1 and R2
1 0 0
0 1 3
So the answer is x=0, y=3