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12 September, 22:09

Given the function f (x) = x^2 and k=3, which of the following represents the graph becoming more narrow?

A. f (x) + k

B. kf (x)

C. f (x+k)

D. f (k-x)

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Answers (1)
  1. 13 September, 00:28
    0
    B

    the spread of the graph of a parabola is determined by the multiplier k

    the standard comparison is against k = 1

    • If k > 1 then the graph narrows towards the y-axis

    • If 0 < k < 1 then graph widens towards the x - axis
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