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1. |
What is the first step in solving the matrix equation
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A. |
Multiply each side of the matrix equation by the identity matrix. |
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B. |
Multiply each side of the matrix equation by  |
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C. |
Divide each side of the matrix equation by  |
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D. |
Find the inverse of  |
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Hint |
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2. |
Given that the inverse of the coefficient matrix is , solve the matrix equation . |
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A. |
(-2, 3) |
B. |
(2, 4) |
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C. |
(-4, 3) |
D. |
(4, 3) |
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Hint |
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3. |
Solve the system of equations 7x – 14y =4, 3x – 6y =17. |
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A. |
no unique solution |
B. |
(2, 1) |
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C. |
(3, –2) |
D. |
infinite solutions |
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Hint |
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4. |
Suppose a matrix equation of a system of equations does not have a unique solution. What cannot be true? |
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A. |
ad – bc ? 0 |
B. |
is undefined |
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C. |
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D. |
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Hint |
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5. |
Solve the system of equations4x – 2y = 2, –3x + 7y = –29 |
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A. |
no solution |
B. |
(–2, 5) |
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C. |
(–2, –5) |
D. |
(2, –5) |
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Hint |
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