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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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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)

User JesusTheHun
by
7.9k points

2 Answers

3 votes

Answer:

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


Explanation:



User Gopherr
by
7.7k points
5 votes
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
User Dahevos
by
7.6k points
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