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# Unit 7: Matrices

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## 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.### Learn

### Practice

- Use matrices to represent dataGet 3 of 4 questions to level up!

### Practice

- Multiply matrices by scalarsGet 3 of 4 questions to level up!

### Practice

- Add & subtract matricesGet 3 of 4 questions to level up!

### Learn

### Practice

- Use matrices to manipulate dataGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Understand matrices as transformations of the planeGet 3 of 4 questions to level up!

### Practice

- Use matrices to transform 3D and 4D vectorsGet 3 of 4 questions to level up!

### Learn

### Practice

- Multiply matricesGet 3 of 4 questions to level up!

### Learn

Level up on the above skills and collect up to 320 Mastery points

### Practice

- Find the inverse of a 2x2 matrixGet 3 of 4 questions to level up!

### Practice

- Use matrices to solve systems of equationsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 1200 Mastery points!