Minimize errors and maximize time: Learn how to quickly solve several questions on the SAT math modules using Desmos graphing calculator and improve your score significantly. The book includes an overview of Desmos graphing calculator interface and features. There are 60 use cases in the book. Each use case is a scenario based on a set of information and contains one or more sample questions. The sample questions require minimal understanding of math concepts. Any required concepts are given at the start of the solution to a question. Desmos graphing calculator graphs in the sample questions are not images. Each graph is a clearly drawn figure that mimics the actual graph (to the best of the ability of the author of this book). The last use case is followed by 60 practice questions. The book contains a list of Desmos graphing calculator candidate questions from the four linear non-adaptive digital tests released by the College Board and their mapping to uses cases in this book. Students can contact the author via the website should questions arise while studying this book. SAT is a registered trademark of the College Board, which is not affiliated in the publication of, and does not endorse this book.