Education Technology

# Activities

• ##### Subject Area

• Math: Algebra I: Equations and Inequalities

9-12

30 Minutes

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• ##### Other Materials
• See the attached PDF file for detailed instructions for this activity

## Inequality Graphing App

#### Activity Overview

Students explore inequalities by entering inequalities using symbols, plot their graphs (including union and intersection shades), store (x, y) coordinate pairs as lists, enter inequalities with vertical lines in an X= editor, and trace points of interest (such as intersections) between functions.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity
• #### During the Activity

Follow the Activity procedures:

• Enter the first inequality expression
• View the plot with the shading
• Enter the second inequality expression
• View the graph and shading
• Examine the point of intersection of the two inequalities and the shaded area
• Explore graphs for other inequalities
• #### After the Activity

• Discuss concepts related to graphing of inequalities