Thread: Need help please
View Single Post
  #2  
Old January 13th, 2009, 06:20 PM
Prove It Prove It is offline
MHF Contributor
  
Join Date: Aug 2008
Posts: 1,451
Country:
Thanks: 48
Thanked 581 Times in 544 Posts
Prove It is a name known to allProve It is a name known to allProve It is a name known to allProve It is a name known to allProve It is a name known to allProve It is a name known to all
Default
Quote:
Originally Posted by kidsdomain View Post
in a 50 word response how can you determine if two lines are perpendicular?
Their gradients have a product of -1.
Reply With Quote
The following users thank Prove It for this useful post:
Donate to MHF