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1.
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2.
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a. | x=3, y=2 | c. | x=6, y=11 | b. | x=2, y=2 | d. | x=2, y=3 |
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3.
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4.
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Alg2_16_5_Ex2Find the determinant of the following matrix using the
definition of a determinant for a 3x3 matrix? 
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5.
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Alg2_16_7_Ex2Find the determinant of the following matrix using expansion
by minors for a 3x3 matrix: 
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6.
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7.
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8.
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9.
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10.
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11.
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12.
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a. | A rectangular array of numbers enclosed by something that looks like a giant absolute
value signs. | c. | a rectangular array of numbers enclosed by square brackets. | b. | a movie in three
parts | d. | any group of
numbers |
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13.
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Alg2_16_1What is the definition of a square matrix?
a. | A matrix that consists of all perfect squares. | c. | A matrix that consists of all
zeros. | b. | A matrix whose determiniant is a perfect square. | d. | A matrix that has the same number of rows and
columns |
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14.
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15.
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Alg2_16_5Find the determinant of the following matrix: 
a. | -2 | c. | It does not have a determinant | b. | 81 | d. | 144 |
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16.
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Alg2_9-9 Ex 3Solve the system using Gaussian
Elimination: x - 2y - z = -1 2x
- y + z = 1 x + 4y + 5z = 5
a. | (1, 1, 0) | c. | consistent, dependent | b. | inconsistent | d. | (0, 0, 1) |
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