Fun with systems of equations! In this activity you’ll solve systems of linear equations by substitution, elimination and graphing to solve a mystery! You'll love the quick and easy set-up; your students will love solving the case.You can customize the suspects, items and locations in this activity! Please note that with this update, the file may not function correctly in all PDF Readers. Please use Acrobat Reader to ensure best functionality.This kit offers three ways to use this activity. Use