Krossword

3. The matrices are said to be ... if their corresponding entries are equal.
6. The matrix derived from coefficients and constant terms of a system of linear equation is called the ... matrix of system.
7. When systems of linear equations have no solution, it is called ... system.
10. x1=4-2x2 Variable x2 can take on any real value in this equation, so it is called ... variable.

1. b is called ... term in this equation
2. "Interchanging 2 equations, multiplying an equation by a nonzero constant, adding a multiple of an equation to another equation" operations are called ... row operations.
4. You can ... 2 matrices by adding their corresponding entries.
5. A=[1 3] type matrix is called row or ... matrix.
6. Ìf A is n×2n matrix and I is n×n identity matrix, [A( dot line) J] is called ... J to matrix A.
8. If 2 systems of linear equations have only 1 mutual solution, the graphs of systems will be 2 ... lines.
9. a1x+a2y=b How many variables are there in the equation?