Question

Find g(x), where g(x) is the reflection across the x-axis of f(x)=x.

Answer 1

Explanation:

The graph f(x) = x

is the same as y=x ( a diagonal line that goes through (1,1)(2,2)... )

the reflection of the line y =x [ f(x) ] is

y = -x

So g(x) = -x

I will leave an attachment below for understanding

Hope this helped and have a good day