# Activities

• ##### Download

• • ##### Subject Area

• Math: Precalculus: Other Topics: Matrices, Sequences, and Series

• ##### Author 9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.0

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Parabolas and Matrices

#### Activity Overview

This lesson involves using matrices to solve a system of three simultaneous linear equations.

#### Objectives

• Students will be able to input their data into matrices and perform calculations on them.
• Students will be able to interpret the results of their calculations.
• Students will utilize different methods to check the results of their calculations and to verify their solutions.

#### Vocabulary

• identity matrix
• inverse matrix
• matrix
• matrix equation
• parabola
• system of equations

#### About the Lesson

This lesson involves using matrices to solve a system of three simultaneous linear equations.
As a result, students will:

• Use matrices to write an equation for a parabola that passes through three given points.
• Input their own matrices to solve problems that are similar to those outlined above.