Question

Let g(x) be the reflection of f(x) in the x-axis. What is the function rule for g(x)? Let g(x) be the reflection of f(x) = 3x + 12 in the x-axis. What is a function rule for g(x)?
A. g(x) = 3x + 12 <---**
B. g(x) = -3x + 12
C. g(x) = -3x - 12
D. g(x) = 3x - 12

Answer 1

Reflection across the y axis means multiply the whole function by -1

so

f(x)=3x+12
times -1
g(x)=-3x-12 is the answer


answer is C
not sure why you put an arrow to choice A, but it's wrong


C is the right answer

Answer 2

I think it'd be C.......