Education Technology

Explore Graphs and Factors

Published on 06/09/2008

Activity Overview

Students use a graphing calculator to explore the relationship between the linear factors of a quadratic function and its zeros. They learn that the x-intercepts and axis of symmetry of a quadratic function can be determined from its linear factors.

This Technology Lab accompanies Lesson 5-3 from the ©2007 Holt, Rinehart and Winston Algebra 2 textbook.

Before the Activity

  • Review the lesson PDF files.
  • Make copies of the lesson PDF files for your class.

During the Activity

Students will:

  • Graph linear and quadratic functions.
  • Identify x-intercepts.
  • Explore the relationship between the linear factors of a quadratic function and its zeros.
  • Learn that the x-intercepts and axis of symmetry of a quadratic function can be determined from its linear factors.

After the Activity

Review student results:

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