reflections of functions

Question

find g(x) where g(x) is the reflection across the y axis of f(x) =6x +8

Answer 1

Put f(x) into a "standard transformation form""

f(x) = 6(x + 4/3)

Reflect across the y-axis:

g(x) = 6(-x + 4/3)

Simplify:

g(x) = -6x + 8