Activity Overview
Students graph systems of linear inequalities in two variables in the Cartesian coordinate plane and find their solutions.
Before the Activity
Install the Inequality Graphing Application 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 17-22 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Follow the Activity procedures:
Write down two linear inequalities with 2 variables and graph them on sketch papers
Place the two graphs one on top of the other and align the axes
Observe the common shaded region
Verify these graphs by using the Inequality Graphing Application
Verify algebraically whether a point is a part of the solution set
Observe that a system of linear inequalities has a common region as a solution set, whereas a system of linear equations has only one solution, the point of intersection
After the Activity
Students will complete the Student Worksheet and answer questions listed in it.
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary