| A | B |
|---|
| Coefficient Matrix | of the linear system ax + by = e, cx + dy =f is . |
| Cramer’s Rule | a method for solving a system of linear equations which uses determinants of matrices. |
| Determinant | a real number associated with any square matrices; of a 2x2, it is the difference of the product of the diagonals. |
| Dimensions of a Matrix | the number m of rows of a matrix by the number n of columns of a matrix, written m x n. |
| Entries of a Matrix | the numbers in a matrix. |
| Identity Matrix | the n x n matrix that has 1’s on the main diagonals and 0’s elsewhere. |
| Inverse Matrix | two n x n matrices are this if their products are the n x n identity matrix. |
| Matrix | a rectangular arrangement of numbers in rows and columns. |
| Scalar | a real number by which you multiply a matrix. |
| Scalar Multiplication | the process of multiplying each entry in a matrix by a scalar. |
