Find two functions defined implicitly by the given relation.x + y2 = 9
A. y = 9 - x or y = -9 + x
B. y = 
or y = - 
C. y = 
or y = 
D. y = 9 - x or y = 9 + x
Answer: B
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Solve the problem.At time t, the position of a body moving along the s-axis is 
m. Find the body's acceleration each time the velocity is zero.
A. a(4) = 24 m/sec2, a(8) = 4 m/sec2 B. a(2) = -6 m/sec2, a(4) = 6 m/sec2 C. a(2) = 0 m/sec2, a(4) = 0 m/sec2 D. a(2) = 6 m/sec2, a(4) = -6 m/sec2
Solve the inequality and graph the solution set.| 9 - x | ? 2
A. [7, ?)
B. [11, ?)
C. (-?, 7] ? [11, ?)
D. [7, 11]
The graph of a quadratic function is given. Find the standard form of the function
A. f(x) = 
(x + 4)2 - 3
B. f(x) = 2(x - 4)2 - 3
C. f(x) = (x - 4)2 - 3
D. f(x) = 
(x - 4)2 - 3
Find the constant of variation for the stated condition: y varies directly as x and inversely as z, and y = 63 when x = 27 and z = 3.
A. k = 7
B. k = 1,701
C. k = 9
D. 
E. 