contestada

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)

Respuesta :

apologiabiology
to reflect the function across the x axis, we must multiply the whole thing by -1
f(kx) is the answer to make the thing negative
so you should result with
f(x)=-x^2
basically the answer is D

Answer:

 

I just got it wrong. The right answer is:  kf(x)


Step-by-step explanation:



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