Education Technology

Algebra 1: Zeros of a Quadratic Function
by Texas Instruments

Published on August 29, 2011

Objectives

  • Students will determine the linear factors of a quadratic function.
  • Students will connect the algebraic representation to the geometric representation.
  • Students will discover that the zeros of the linear factors are the zeros of the quadratic function.
  • Students will discover that the zeros of the quadratic function are the zeros of its linear factors.

Vocabulary

  • zeros

About the Lesson

This lesson involves merging graphical and algebraic representations of a quadratic function and its linear factors. As a result, students will:

  • Manipulate the parameters of the linear functions and observe the resulting changes in the quadratic function.
  • Find the zeros of the quadratic function by finding the zeros of its linear factors.
  • Solve quadratic equations by factoring and be able to explain why this process is valid.