Show how matrices can be helpful for solving systems of equations. The video illustrates an example of solving a two-variable system utilizing Cramer's Rule. The instructor shows how to find the determinant of each matrix and then uses those determinants to find the x- and y-values of the solution.

Concepts

systems of linear equations, systems of equations, cramer's rule, matrices

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Additional Tags

math

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Instructional Ideas

• Create a guided notes document for learners to complete while watching the video
• Flip your classroom by assigning the video as homework and utilizing class time for questions and practice

Classroom Considerations

• Assumes a familiarity with matrices

• This video is hosted on YouTube

Pros

• Reviews how to find the determinant of a 2 x 2 matrix during the example
• Organizes the work well to allow pupils to follow the instruction through the multi-step process

Cons

• None

Common Core

HSA-REI.C.9