Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Vertices at (2, 0) and (-2, 0); foci at (9, 0) and (-9, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: D
Mathematics
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Solve by the substitution method.x - 4y = -37x - 3y = -21
A. ? B. {(x, y)|x - 4y = -3} C. {(3, -1)} D. {(-3, 0)}
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Rewrite the polynomial in descending order.x6 + x + 9x3 + 1 + 5x2
A. 9x3 + 5x2 + 1 + x6 + x B. x + 5x2 + 9x3 + x6 + 1 C. x6 + 9x3 + 5x2 + x + 1 D. 1 + x + 5x2 + 9x3 + x6
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Find the slope of the line that passes through the given two points. If the slope is undefined, state this.(1, 4) and (13, 19)
A. 
B. 
C. 
D. 
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The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(1, 2)
A. constant B. decreasing C. increasing
Mathematics