Matrices in Linear Algebra Lesson Plans Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Where do you want the zeros when using Gaussian elimination?

Question 2 2. Which of the following is NOT true regarding matrices?

Question 3 3. Multiply the first row by -3 and add it to the second row.

Question 4 4. How many solutions does a dependent system have?

Question 5 5. What form do you need to change your matrix into when using Gauss-Jordan elimination?

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Question 6 6. How many solutions does an inconsistent system have?

Question 7 7. What kinds of brackets are used in proper matrix notation?

Question 8 8. Write in augmented matrix form.

Question 9 9. Which type of system has an infinite number of solutions?

Question 10 10. If you switch the first row with the fourth row, what will the new first row be?

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Question 11 11. You are trying to solve a system using Gaussian elimination. In the process, you see that you get 0 for all the rows below the first row. What does this most likely mean for your system?

Question 12 12. If the inverse of matrix A is this, what is the solution when the constants are 10 and 13?

Question 13 13. When you have an inconsistent or dependent system, what does the coefficient matrix equal to when you use Cramer's Rule?

Question 14 14. What is the first row of our augmented matrix?

Question 15 15. Which system of equations is represented by the following matrix? (Think of the vertical line as the equal sign.)

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Question 16 16. Which of these statements is not true?

Question 17 17. If the determinant of a coefficient matrix equals 0, what does it tell you about the linear system?

Question 18 18. Which row would you multiply by -2 to help you find the inverse matrix?

Question 19 19. Which of the following is an equation included in this matrix?

Question 20 20. When you multiply matrices, if the first matrix is a 4x3 matrix, which of the following matrices can we multiply with the first?

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Question 21 21. Solve.

Question 22 22. A matrix multiplied by its inverse is equal to what?

Question 23 23. What of these symbols is commonly used to enclose a matrix?

Question 24 24. You are solving a system using Gaussian elimination when you realize that your last row tells you that 0 = 4. You know this to be false, so what does this most likely mean for your system?

Question 25 25. Multiply the fourth row by 3.

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Question 26 26. A matrix B multiplied by its identity matrix is equal to what?

Question 27 27. The identity matrix can be likened to what number?

Question 28 28. Which of the following is NOT a correct description of the reduced row echelon form?

Question 29 29. Which numbers need to be changed to 0 for this linear system?

Question 30 30. Which of the following describes what a matrix looks like?

Matrices in Linear Algebra Lesson Plans Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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