Data are given for y as a power function of x. Write an equation for the power function, and state its power and constant of variation.
A. y = ; Power = -4; constant of variation = 16
B. y = - ; Power = -2; constant of variation = -16
C. y = - ; Power = -1; constant of variation = -16
D. y = - 16x ; Power = 1; constant of variation = -16
Answer: B
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