Thread: checking matrices for linear independence

M1 = 1 0
5 6
M2 = 3 4
2 0
M2 = 0 7
1 3

M1, M2, M3 are 2 x 2 matrices.
How do you check the {M1, M2, M3} for linear independence?
Also, how do you determine the span?

Linearly independent over what? ?