Math Help - Need help please

in a 50 word response how can you determine if two lines are perpendicular?

Originally Posted by kidsdomain

in a 50 word response how can you determine if two lines are perpendicular?

Their gradients have a product of -1.

Originally Posted by kidsdomain

in a 50 word response how can you determine if two lines are perpendicular?

Originally Posted by Prove It

Their gradients have a product of -1.

That's only six words (seven if you count ha ha the number).

Originally Posted by mr fantastic

That's only six words (seven if you count ha ha the number).

Well I do want the OP to do SOME research Mr F :P