The hyperbola shown in the calculator-generated graph was graphed in function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?
10
-10
A. y1 = 3
, y2 = -3
B. y1 = 7
, y2 = -7
C. y1 = 7
, y2 = -7
D. y1 = 7
, y2 = -7
Answer: C
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