Question

Use the matrix tool to solve the system of equations. Find the correct ordered pair.
4x - y = 10
8x + 5y = 34

Answer 1

Set up an augmented matrix, so
4 -1 10
8 5 34

then row reduce

4 -1 10
0 7 14

becomes


4 -1 10
0 1 2

one more row replacement

4 0 12
0 1 2

and then scale

1 0 3
0 1 2

So by the first row, x=3, by the second, y=2

Answer 2

Sorry, kind of did it for you I guess. Let me know if you have questions about the row operations.

Answer 3

thanks