# Matrices

## Introduction to matrices

Practice
Matrix dimensionsGet 3 of 4 questions to level up!
0/100 points
Matrix elementsGet 3 of 4 questions to level up!
0/100 points

## Representing linear systems of equations with augmented matrices

Practice
Represent linear systems with matricesGet 3 of 4 questions to level up!
0/100 points

## Elementary matrix row operations

Practice
Matrix row operationsGet 3 of 4 questions to level up!
0/100 points

## Row-echelon form and Gaussian elimination

#### Quiz 1

Level up on the above skills and collect up to 400 Mastery points

Practice
Add & subtract matricesGet 3 of 4 questions to level up!
0/100 points
Matrix equations: addition & subtractionGet 3 of 4 questions to level up!
0/100 points

## Multiplying matrices by scalars

Practice
Multiply matrices by scalarsGet 3 of 4 questions to level up!
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Matrix equations: scalar multiplicationGet 3 of 4 questions to level up!
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## Properties of matrix addition & scalar multiplication

#### Quiz 2

Level up on the above skills and collect up to 400 Mastery points

## Multiplying matrices by matrices

Practice
Multiply matricesGet 3 of 4 questions to level up!
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## Matrices as transformations

Practice
Transform vectors using matricesGet 3 of 4 questions to level up!
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Transform polygons using matricesGet 3 of 4 questions to level up!
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Matrices as transformationsGet 3 of 4 questions to level up!
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#### Quiz 3

Level up on the above skills and collect up to 400 Mastery points

## The determinant of a 2x2 matrix

Practice
Determinant of a 2x2 matrixGet 3 of 4 questions to level up!
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## Introduction to matrix inverses

Practice
Determine inverse matricesGet 3 of 4 questions to level up!
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Determine invertible matricesGet 3 of 4 questions to level up!
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## Practice finding the inverses of 2x2 matrices

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Practice
Find the inverse of a 2x2 matrixGet 3 of 4 questions to level up!
0/100 points

## Solving equations with inverse matrices

Practice
Represent linear systems with matrix equationsGet 3 of 4 questions to level up!
0/100 points

## Model real-world situations with matrices

#### Quiz 4

Level up on the above skills and collect up to 500 Mastery points
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#### Unit test

Level up on all the skills in this unit and collect up to 1700 Mastery points!