This study guides provide step-by-step instructions for solving any 3x3 (or higher) system using the TI-83. It includes material that the student must write down for credit:
Determinant Value (DET)
Answer (written as an ordered triple)
Students are instructed that they will not receive credit unless showing these steps as well as the fact that DET = 0 means then cannot use the calculator method to solve the system.