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In this learning activity, discuss with the other members of your group your experiences with matrices.

**Post **a 150-word response to one of the discussion prompts by Day 5 in the discussion area below:

**Prompt 1**

**View** the following Week 3 videos:

- Patrick Just Math Tutorials: Solving a Linear System of Equations by Graphing
- Patrick Just Math Tutorials: Linear System of Equations: Solving using Substitution
- Patrick Just Math Tutorials: Linear System of Equations: Solving using Elimination by Addition

**Answer **the following questions:

- After learning the three methods of solving linear systems of equations, which method do you prefer? Why?
- What makes this method better than the others?
- If you were to share your method, what would you say to a fellow classmate to convince them that your method is the best?

**Prompt 2**

**View** one of the following Week 3 videos:

- Khan Academy: Intro to Matrices
- Patrick Just Math Tutorials: Matrices: Basic Matrix Operations (add, subtract, multiply by constant)

**Answer** the following questions:

- How do you determine when you can multiply 2 matrices? What do these results tell you? Provide an example with your explanation.

**Prompt** **3**

**Do** the following:

- Search the internet for real-world applications of matrices. Share the application you discovered with the class along with how it relates to systems of equations. Be sure to reference the source.

*Note*: All Khan Academy content is available for free at www.khanacademy.org.

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