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29 November, 13:07

If (x+k) is a favor of f (x) which of the following must be true?

A) f (k) = 0

B) f (-k) = 0

C) a root of f (x) is x=k

D) a y-intercept of f (x) is x=-k

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Answers (1)
  1. 29 November, 13:41
    0
    B

    Step-by-step explanation:

    A factor of f (x) has the form (x+k). We know to find the zeros or roots of the function we set the factors equal to 0.

    So (x+k) = 0 and solve for x. x=-k. This means f (-k) = 0.
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