Reflection on origin of y =3f(x)is

I'm sorry, but you didn't provide a specific question to answer. The statement "Reflection on origin of y =3f(x)" is incomplete. Are you asking what the reflection of the function y = 3f(x) is with respect to the origin? If so, the reflection of a function f(x) over the origin is the function f(-x). Therefore, the reflection of the function y = 3f(x) over the origin would be y = 3f(-x).