Question: How to change linestyle by option?

With the RationalFunctionTutor generated then modified code (see egn2.mw attached).  Is it possible to make linestyle=spacedash for the two vertical asymtotes?  By selecting the graph and choosing from the plot menu the linestyle can be changed, but is there a way to do this with commands in the program code? 

egn2.mw

 

Please Wait...