# Matrices

# Unlock your personalized study plan

Take Quiz 1 to identify your areas for growth. We'll recommend lessons for exactly what you need to learn.

Lessons

Introduction to matricesRepresenting linear systems of equations with augmented matricesElementary matrix row operationsRow-echelon form and Gaussian eliminationQuiz 1Adding and subtracting matricesMultiplying matrices by scalarsProperties of matrix addition & scalar multiplicationQuiz 2Multiplying matrices by matricesProperties of matrix multiplicationMatrices as transformationsQuiz 3The determinant of a 2x2 matrixIntroduction to matrix inversesFinding the inverse of a matrix using its determinantPractice finding the inverses of 2x2 matricesSolving equations with inverse matricesQuiz 4Model real-world situations with matricesUnit testPractice

Quizzes

Unit test

Practice

Matrix row operations

4 questions

Practice

Identify your areas for growth in these lessons:

Practice

Add & subtract matrices

4 questions

Practice

Matrix equations: addition & subtraction

4 questions

Practice

Practice

Multiply matrices by scalars

4 questions

Practice

Matrix equations: scalar multiplication

4 questions

Practice

Identify your areas for growth in these lessons:

Practice

Multiply matrices

4 questions

Practice

Learn

Learn

Practice

Transform vectors using matrices

4 questions

Practice

Transform polygons using matrices

4 questions

Practice

Matrices as transformations

4 questions

Practice

Identify your areas for growth in these lessons:

Practice

Determinant of a 2x2 matrix

4 questions

Practice

Practice

Determine inverse matrices

4 questions

Practice

Determine invertible matrices

4 questions

Practice

Practice

Find the inverse of a 2x2 matrix

4 questions

Practice

Test your understanding of

**Matrices**with these 15 questions.About this unit

Learn what matrices are and about their various uses: solving systems of equations, transforming shapes and vectors, and representing real-world situations. Learn how to add, subtract, and multiply matrices, and find the inverses of matrices.