Solve the system graphically.
A. (1, 21)
B. (1, 20), (-3, 12)
C. (1, 20), (-3, 12), 
D. 
, 
, 
Answer: C
Mathematics
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and parallel to the xz -plane at the point 
A. 
B. - 9
C. 9
D. - 
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A. 
B. 
C. 
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÷ 
A. 
B. 
C. 
D. 
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