Systems of three equations
12th grade (Year 13 in England) · 16 questions · Common Core: HSA.REI.C.6
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Date
Score/ 16
Question 1
Solve: x + y + z = 0, x − y + 2z = −8, 2x + y − z = −4. What is y?
Answer
Question 2
Solve: x + y + z = −7, x − y + 2z = −3, 2x + y − z = −5. What is y?
Answer
Question 3
Solve: x + y + z = −6, x − y + 2z = −6, 2x + y − z = −5. What is z?
Answer
Question 4
Solve: x + y + z = 4, x − y + 2z = 15, 2x + y − z = 3. What is y?
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Question 5
Solve: x + y + z = 8, x − y + 2z = 2, 2x + y − z = 13. What is z?
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Question 6
Solve: x + y + z = 8, x − y + 2z = 10, 2x + y − z = 10. What is x?
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Question 7
Solve: x + y + z = 1, x − y + 2z = −5, 2x + y − z = −1. What is z?
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Question 8
Solve: x + y + z = 11, x − y + 2z = 0, 2x + y − z = 13. What is x?
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Question 9
Solve: x + y + z = 12, x − y + 2z = 11, 2x + y − z = 6. What is z?
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Question 10
Solve: x + y + z = 3, x − y + 2z = 2, 2x + y − z = 2. What is y?
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Question 11
Solve: x + y + z = −1, x − y + 2z = −7, 2x + y − z = −5. What is x?
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Question 12
Solve: x + y + z = 11, x − y + 2z = 16, 2x + y − z = 7. What is x?
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Question 13
Solve: x + y + z = −7, x − y + 2z = −3, 2x + y − z = −5. What is z?
Answer
Question 14
Solve: x + y + z = −10, x − y + 2z = −4, 2x + y − z = −10. What is y?
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Question 15
Solve: x + y + z = 11, x − y + 2z = 6, 2x + y − z = 2. What is y?
Answer
Question 16
Solve: x + y + z = 4, x − y + 2z = 8, 2x + y − z = 10. What is x?
Answer
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