Linear algebra

Given 3 simultaneous equations with 3 unknowns each, how do i determine if they have 0, 1, or infinite sets of solutions? I know how to convert the equations into reduced echelon form, if it helps. Thanks.

>>5

Linear algebra means you don't have to think about shit geometrically.

Where's your geometry when it's 5 sets of equations in 5 variables?


That's right, fucking with your head.