# Activities

• • • ##### Subject Area

• Math: Algebra I: Linear Functions

• ##### Author 9-12

60 Minutes

• ##### Device
• TI-73 Explorer™
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
This is Activity 12 from the EXPLORATIONS Book:
Topics In Algebra 1.

## Linear Systems: Using Graphs and Tables

#### Activity Overview

Students learn to locate the real number solution of a system of linear equations (two equations and two variables) with the help of tables and graphs. They also learn to graphically illustrate the types of solutions expected for a system of linear equations.

#### Before the Activity

Install Topics in Algebra 1 (Chapters 5) App on the calculator using one of these two methods:

• TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
• TI-Navigator™  "send to class" feature
• See the attached PDF file for detailed instructions for this activity
• Print pages 5-1 to 5-7 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to the class.

• Determine the number of solutions for a system of linear equations
• In the activity System Match it!, use the knowledge of both functions and the graph and determine the correct answer
• Gather information from a word problem and use induction to write a system of equations
• Use the calculator to graph lines of a system of equations
• Use the table to find the exact solution
• #### After the Activity

Students will complete the Student Worksheet and analyze the results.

Review student results:

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary