Algebra 2 Unit 3 - Systems of Equations and Inequalities

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Across
  1. 3. the vertical arrangement of numbers inside a matrix
  2. 6. when a matrix is multiplied by a number
  3. 8. the reciprocal matrix,A^-1
  4. 10. this is known as linear combination when solving a system of linear equations
  5. 12. the perimeter of the shaded region
  6. 13. the horizontal arrangement of numbers inside a matrix
  7. 14. for a 2x2 matrix, it's ad - bc
  8. 15. reduced-row echelon form
Down
  1. 1. a method of solving a system of equations where one variable is replaced with an equivalent expression
  2. 2. a number or an entry inside a matrix
  3. 4. the solution zone of a system of inequalities
  4. 5. a rectangular array of numbers in rows and columns
  5. 7. a square matrix with 1's in the main diagonal and 0's in all other elements
  6. 9. 2x3, for example
  7. 11. the solution arrangement of a system of 3 equations and 3 unknowns