# 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 10 from the EXPLORATIONS Book:
Topics In Algebra 1.

## Linear Inequalities: Using Graphs and Tables

#### Activity Overview

Students learn to estimate the solution set, in real numbers, of a linear inequality using graphical methods on a number line and on a Cartesian (x-y) graph. They also learn how to solve inequalities using tables.

#### Before the Activity

Install Topics in Algebra 1 (Chapters 1-4) 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 4-1 to 4-5 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to the class.

• Draw the number line graph for each inequality
• In the activity Build the Solution Set!, select the correct solution for x from the four options given
• Use the number line to estimate the solution set of the given inequalities
• Use the table of the expression to estimate the solution for the inequality and then use number sense to determine the exact answer
• Find the solution of inequalities using x-y graphs