Ch 9: ORELA Math: Matrix Operations & Determinants

About This Chapter

The ORELA Mathematics test has been replaced with the NES Mathematics certification exam. Complete the activities of this chapter to prepare for questions on the NES Mathematics exam related to matrix operations and determinants.

ORELA Math: Matrix Operations & Determinants - Chapter Summary

As part of a preparation course for the ORELA Math test, the activities of this chapter will help you review how to solve matrices and find determinants. Watch the lesson videos of this chapter to improve your understanding of:

  • Performing row operations in matrices
  • Matrix notations
  • Mathematical operations with matrices
  • Matrix equations, and multiplicative inverses of matrices
  • Solving inverse matrices
  • Finding determinants

If you feel you would benefit from an alternative way of reviewing the material, try reading over the lesson transcripts that present the same material of the videos but in a written format. You can also reinforce your understanding of the material by completing lesson worksheets and quizzes. Use the results from your quizzes to get an idea of topics you don't understand, then fortify those topics by returning to the lesson videos with video tags.

6 Lessons in Chapter 9: ORELA Math: Matrix Operations & Determinants
Test your knowledge with a 30-question chapter practice test
What is a Matrix?

1. What is a Matrix?

As math gets more and more complicated and there become more and more numbers flying around, it becomes really handy to put all these numbers in a nice organized grid... hello matrices! Learn about what they are and why there are used.

How to Perform Matrix Row Operations

2. How to Perform Matrix Row Operations

Watch this video lesson to learn how easy it is to perform row operations on a matrix. Learn how to perform the three basic operations easily and quickly.

Matrix Notation, Equal Matrices & Math Operations with Matrices

3. Matrix Notation, Equal Matrices & Math Operations with Matrices

Watch this video lesson to learn about the basics of matrices and what kinds of math operations you can do with them. Also learn how to determine whether two matrices are the same or not.

Multiplicative Inverses of Matrices and Matrix Equations

4. Multiplicative Inverses of Matrices and Matrix Equations

Watch this video lesson to learn about another method you can use to solve a matrix problem if you are given the inverse of the matrix. You will also learn the identifying mark of the multiplicative inverse of a matrix.

How to Solve Inverse Matrices

5. How to Solve Inverse Matrices

Watch this video lesson to learn what kinds of matrix operations you can take to find the inverse of a matrix. Also learn why matrix inverses are useful.

How to Take a Determinant of a Matrix

6. How to Take a Determinant of a Matrix

Matrices are incredibly powerful and can help you do all sorts of things, but one of the most basic (and surprisingly helpful) operations you can perform on one is to take its determinant. Learn how to do that here!

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the ORELA Mathematics: Practice & Study Guide course

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