For both graphs you have set the x-range to -10..10 but the y-ranges are different, and the graph has been scaled so that (as you can see from the axes) the aspect ratio is not 1:1.
Try specifying equal y-ranges as well as equal x-ranges. John Cremona On 16 April 2014 08:29, omid habibi <omid...@gmail.com> wrote: > Suppose we have two equations > p1 = 3x+ 1 > p2 = -1/3x + 3 > > As you may know because of slopes, these two lines must be perpendicular. > It's true when I plot it on paper but when I do it in SageMath I get this: > > sage: p1 = plot( 3*x + 1, -10, 10) > sage: p2 = plot( -1/3*x + 3, -10, 10) > sage: show ( p1 + p2 ) > > > > <http://up.liz.ir/f/6364-tmp_N1rNk.png> > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
