Question

Use a matrix to find the solution to the system of equations.
-8x-8y=-16
6x-9y=-108

Answer 1

what it the matrix you start with? Do you know that?

Answer 2

no thats just the whole question

Answer 3

You build ur first matrix from the coefficents

Answer 4

-8 -8 | -16
6 -9 | -108

Answer 5

A few Matrix rules

1) You can rearrange rows
2) You can multiply a row my a scaler
3) You can add rows
4) You CANNOT multiply rows

Answer 6

The goal is to get all 1's in the primary diagonal and zeros in the other spots.

The first column is the x variable and the 2nd is the y variable.

Answer 7

the first row and third column number is what x equals and y equals the second row of the last column

Answer 8

the answer is one of thiese so how do i find that?
(–6, 8)
(6, 8)
(8, –6)
(6, –8)

Answer 9

You need to do a series of row operations

Answer 10

http://www.sparknotes.com/math/algebra2/systemsofthreeequations/section2.rhtml

Answer 11

this is a 3 equation system but it is the same principle for 2

Answer 12

can u break this down for me all the way to the answer when i read stuff i never can comprehend it but when i see the problem broke down i can understand it more.