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Algebra II Terms

Get down with the lingo

Cramer's Rule

This rule is a way to solve square systems using determinants.

Determinant

Determinants ditch the brackets and use vertical lines instead. You can only find a determinant for a square matrix. Example: [[2,6],[3,3]] or D = det([[2,6],[3,3]])

Entries

Entries are the numbers or variables inside the brackets. In the example for the term "Matrix" the entries are 2, 4, -3, 1, -7, and 41.

Matrix

Variables or constants arranged like a grid in rows and columns that together make up a rectangle. The rows go across, and the columns are vertical; they're like the columns in the Lincoln Memorial. Here's a 2 × 2 matrix: 

[[2,6],[3,3]] 

Matrix Equation

In these, we used basic operations to combine systems of matrices.

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