Chapter 3 Vocab

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Across
  1. 5. A matrix in which every element is zero
  2. 7. Any rectangular array of variables or constants in horizontal rows or vertical columns
  3. 8. A region of a graph when the system of constraints is a polygonal region
  4. 10. A method that uses determinants, to solve a system of linear equations
  5. 12. A matrix that contains only the coefficients of a system of equations
  6. 15. A method for finding the determinant of a third-order matrix
  7. 17. The determinant of a 2 by 2 matrix
  8. 20. To seek the optimal price or amount that is desired to minimize costs or maximize profits
  9. 21. If a is an element of matrix A and b is element of matrix B, then the matrix A and B are equal only if a = b for all i and j values
  10. 23. A matrix that only has one row
  11. 24. A matrix consisting of a single column of m elements
  12. 25. A system of equations with exactly one solution
  13. 26. A set of equations with the same variables
  14. 28. A matrix form used to represent a system of equations
  15. 29. A matrix that only contains the variables of a system of equations
  16. 30. A set of inequalities with the same variables
  17. 31. A square matrix that, when multiplied by another matrix, equals that same matrix
  18. 32. A system of inequalities that forms a region that is open
Down
  1. 1. a reciprocal quantity, mathematical expression, geometric figure, etc., that is the result of inversion
  2. 2. Eliminate one of the variables in a system of equations by adding or subtracting the equations
  3. 3. A system of equations that has an infinite number of solutions
  4. 4. A matrix with the same number of rows and columns
  5. 6. A constant
  6. 9. The process of finding the maximum or minimum values of a function for a region defined by inequalities
  7. 11. A method of solving a system of equations in which one equation is solved for one variable in terms of the other
  8. 13. A system of equations with no ordered pair that satisfy both equations
  9. 14. Conditions given to variables, often expressed as linear inequalities
  10. 16. A system of equations that has at least one ordered pair that satisfies both equations
  11. 18. A square array of numbers or variables enclosed between two parallel lines
  12. 19. Determinant of a 3 by 3 matrix
  13. 22. A matrix that contains the constants of a system
  14. 27. The intersection of the graphs in a system of constraints