Question

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Answer 1

well the trick of finding the slope :)

Answer 2

im confused

Answer 3

give example :)
write down ur question

Answer 4

i dont have an example thats the question

Answer 5

ok , so assume there is two line
L1 and L2 ok ?

Answer 6

ok

Answer 7

and let m is the slope of L1
n the slope of L2 , ok ?

Answer 8

then if L1 perpendicular to L2
then
m= -1 /n

if L1 parallel to L2
then
m= n

thats it :)

Answer 9

oh ok :) thanks

Answer 10

np :)