Identify the equation without applying a rotation of axes.3x2 - 8xy + 2y2 + 4x + 2y - 9 = 0
A. ellipse
B. parabola
C. hyperbola
D. not a conic
Answer: C
Mathematics
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Construct a phase line. Identify signs of y' and y".y' = 
, y > 0
A.
| ? |
B.
C.
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D.
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Arrange slopes from flattest to steepest.
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Estimate the following problem. Select the nearest answer. 2,100 ð 110 =
a. 210,000 b. 21,000 c. 211,000,000
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Solve the problem.In 1980, the population of a city was 6.8 million. By 1992 the population had grown to 9.5 million. Find the average rate of change in population from 1980 to 1992..
A. 
million per year
B. 
million per year
C. 
million per year
D. 
million per year
Mathematics