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1 December, 01:42

Given the function f (x) = x2 and k = - 1, which of the following represents a function opening downward

a. f (x) + k

b. kf (x)

c. f (x + k)

d. f (kx)

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Answers (1)
  1. 1 December, 04:21
    0
    Answer=B

    B is the only function with a negative slope.

    kf (x) = - 1 (x^2) (the slope is negative so the parabola opens downward)
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