Is this the best way to solve 2 x 2 systems?
But, if you've got a computer (or a graphing calculator) to pop the inverses, it's a pretty slick way to solve 3 x 3's and up.
There's one more important thing that I need to tell you about inverse functions... It will make more sense now that you know about using them to solve systems.
If the determinant of a matrix is zero,
Check it out: