f(x)=2x+1

Question

Sketch in a single diagram the graphs of y=f(x) and y=f^-1(x), making clear relationship between the graphs.

Answer 1

I outlined the steps for this type of question in your previous post
www.jiskha.com/questions/1801140/How-to-sketch-the-graph-of-y-f-1-x

Are you even reading my replies?