Complete the square to write the equation in the form 
- 
= 1 or 
- 
= 1. x2 - y2 - 6x + 6y - 1 = 0
A. 
- 
= 1
B. (x - 3)2 + (y - 3)2 = 1
C. (y - 3)2 - (x - 3)2 = 1
D. (x - 3)2 - (y - 3)2 = 1
Answer: D
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Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.x2 + y2 = 13.85x = 3y - 1
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Construct a frequency histogram for the data using the given class intervals in the frequency table below. 
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A. 1.8 hr B. 5 hr C. 2.5 hr D. 1.2 hr