Chapter 3 Vocab

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Across
  1. 3. a system of inequalities that forms a region that is open
  2. 7. a square array of numbers enclosed between two parallel lines
  3. 8. to seek the optimal price or amount that is desired to minimize costs or maximize profits
  4. 9. a system of linear equations has exactly one solution
  5. 10. a matrix form used to represent a system of equations
  6. 12. a method for finding the determinate of a third order matrix
  7. 13. a method of solving a system of equations in which one equation is solved for one variable in terms of the other
  8. 16. conditions given to variables often expressed as linear inequalities
  9. 18. a system of equations that has an infinite number of solutions
  10. 19. any rectangular array of variables or constants in horizontal rows or vertical columns
  11. 20. the determinant of a 2x2 matrix
  12. 21. multiplying any matrix by a constant called a scalar
  13. 23. a matrix that contains only the coefficients of a system of equations
  14. 25. the process of finding the maximum or minimum values of a function for a region defined by inequalities
  15. 26. a set of inequalities with the same variables
  16. 28. a square matrix that when multiplied by another matrix equals that same matrix
  17. 29. if two matrices have their corresponding elements equal then they are called equal matrices
  18. 30. a method that uses determinants to solve a system of linear equations
  19. 31. a constant
  20. 32. a matrix in which every element is zero
Down
  1. 1. a set of equations with the same variables
  2. 2. a matrix that contains a constants of a system
  3. 4. a matrix consisting of a single column of m elements
  4. 5. the intersection of the graphs in a system of constraints
  5. 6. a matrix that has only one row
  6. 11. determinate of a 3x3 matrix
  7. 14. a matrix with the same number of rows and columns
  8. 15. a region where the graph of a system of constraints is a polygonal region
  9. 17. a system of equations that has at least one ordered pair that satisfies both equations
  10. 22. a system of equations with no ordered pair that satisfies both equations
  11. 24. eliminate one of the variables from a system of equations by adding or subtracting the equations
  12. 27. a matrix that only contains the variables of a system of equations
  13. 28. an operation that is opposite of the original operation