(CC BY) This textbook, published by Textbook Equity, is an open education resource released by The Saylor Foundation under a Creative Commons license. The original textbook, written by Kenneth Kuttler, was chosen by the Saylor Foundation, after a thorough peer review, to be the companion textbook to their online course. This is an introduction to linear algebra. The main part of the book features row operations and everything is done in terms of the row reduced echelon form and speci