1.   Which element is in row 3, column 1?
   
    A. 9 B. 6
    C. 4 D. -1
    Hint

  2.   Find A - B if and
    A. B.
    C. D.
    Hint

  3.   Find C + D if C = [14 8 -1] and D = [-10 8 15].
    A. [24 16 14] B. [4 16 14]
    C. [4 0 -16] D. [24 0 -16]
    Hint

  4.   Write the translation matrix for and its image
   
    A. B.
    C. D.
    Hint

  5.   For the determinant , which is the minor of -4?
    A. B.
    C. D.
    Hint

  6.   Solve using inverse matrices.
    A. (-4, 4) B. (-4, 0)
    C. (4, -4) D. (4, 4)
    Hint

  7.   Which of the following is an example of a column matrix?
    A. B.
    C. D.
    Hint

  8.   Find the product of
    A.
    B.
    C.
    D.
    Hint

  9.   Which of the following is true concerning matrix multiplication of three matrices A, B, and C?
    A. AB = BA for no cases
    B. (A + B)C = CA + CB
    C. AB = BA for all cases
    D. C(A + B) = CA + CB
    Hint

  10.   What are the coordinates of the vertices of the image of rectangle HJKL with H(4, 1), J(-3, -2), K(2, -6), and L(-4, 5) after a reflection across the x-axis?
    A. H'(-4, –1), J'(-3, -2), K'(-2, -6), L'(-4, -5)
    B. H'(-4, 1), J'(3, -2), K'(-2, -6), L>'(4, 5)
    C. H'(-4, –1), J'(3, 2), K'(-2, 6), L'(4, -5)
    D. H'(4, –1), J'(-3, 2), K'(2, 6), L'(-4, -5)
    Hint

  11.   Evaluate
    A. 111 B. –51
    C. 37 D. –654
    Hint

  12.   Which of the following cannot be true concerning Cramer's Rule for two variables?
    A. B.
    C. D.
    Hint

  13.   Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth.
    A. (1.86, –2.20) B. (1.86, 2.20)
    C. (–1.86, –2.20) D. (–1.86, 2.20)
    Hint

  14.   What is the 4 × 4 identity matrix?
    A. B.
    C. D.
    Hint

  15.   Find the inverse of if it exists.
    A. B.
    C. does not exist, since adbc = 0 D.
    Hint

  16.   Solve the system of equations4x – 2y = 2, –3x + 7y = –29
    A. no solution B. (2, –5)
    C. (–2, 5) D. (–2, –5)
    Hint



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