Solving with a matrix. Enter the answer as an ordered pair.

4x - y = 10
8x + 5y = 34

Question

Solving with a matrix. Enter the answer as an ordered pair.

4x - y = 10 
8x + 5y = 34

anonymous · Answer

4    -1    10
8     5     34
multiplying the first row by 2

8    -2     20
8     5      34
subtract 
8     -2     20
0      7      14

so 7y=14
y=2

8x-2*2=20
x=3

anonymous · Answer

i'm not sure it is "solving with matrix"

anonymous · Answer

I think it is.

anonymous · Answer

yeah it's possible, but i would have solved Ax = B by inverting A and multypling it to B...

anonymous · Answer

It is solving with Matrix. I just didn't understand how to get a point from it.

anonymous · Answer

to get a point you just have to take (x, y). just be careful with the order, it's always x before y