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1. |
The solution of a system of three linear equations in three variables, x, y, and z, is called a(n) ____ (x, y, z). |
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A. |
sum |
B. |
ordered pair |
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C. |
ordered triple |
D. |
integer |
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Hint |
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2. |
A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have? |
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A. |
2 |
B. |
1 |
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C. |
0 |
D. |
infinite number |
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Hint |
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3. |
Determine which ordered triple is a solution of the system of equations. 
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A. |
(0, 1, -14) |
B. |
(0, 0, 11) |
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C. |
(1, -2, 6) |
D. |
(-1, 2, -16) |
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Hint |
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4. |
Solve the system of equations. 
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A. |
infinite number of solutions |
B. |
(1, 1, 2) |
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C. |
no solution |
D. |
(0, -2, 7) |
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Hint |
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5. |
Solve the system 4y – 6x + 8z = 13, 10y – 15x + 20z = 6, y – 5x + 2z = 5. |
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A. |
 |
B. |
infinite solutions |
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C. |
no solution |
D. |
(-3, 1, 7) |
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Hint |
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