[R] Very simple question on plot

[Ronaldo Reis Junior]

Hi,

I try to make a plot like this:

Y |
  |
  |               o  
  |         o        o
  |     o               o
  |  o                     o
  |o                         o   o
  |--------------------------------
   0 10 20 30 40 50 60 70 80 90 100 (A)
 100 90 80 70 60 50 40 30 20 10 0   (B)

or
		B
  100 90 80 70 60 50 40 30 20 10 0
Y |--------------------------------
  |
  |               o  
  |         o        o
  |     o               o
  |  o                     o
  |o                         o   o
  |--------------------------------
   0 10 20 30 40 50 60 70 80 90 100
		A

A and B are complementary variables.

How is the best way to make this plot?

Thanks
Ronaldo
--
> Prof. Ronaldo Reis Júnior
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