Row reduce the matrix you formed. Count the pivots of the row reduced matrix. This number is the dimension of the subspace formed by these vectors.
What is the dimension of the subspace spanned by the following vectors?
[1
2
3
0]
[2
3
0
4]
[5
0
6
7]
[8
5
9
11]
im assuming you can combine these vectors into a matrix which would look like this...
[1 2 5 8
2 3 0 5
3 0 6 9
0 4 7 11]
and then from there what do i do? i think i need to put it in row reduced echelon form, but once i do that, how do i present the answer?