Use equations to create secret messages on a graph. Solving the equation decodes the message. Pearson Prentice Hall Updated on: October 12, 2001 Grade: 6 | 7 | 8 Subjects: Algebra (264) Mathematics (4,991) Graphs and Charts (536) Equations (17) TYPE: Worksheets (13,375) Download Add to Favorites CREATE NEW FOLDER CancelManage My Favorites