Question

Which of the following pairs of slopes are of perpendicular lines?



1/2 and 2
3/4 and -4/3
-2/5 and -5/2

Answer 1

how do you know if slopes are perpendicular?

Answer 2

idk

Answer 3

if one slope is \[\frac{ a }{ b }\] then a perpendicular slope is \[\frac{ -b }{ a }\]

Answer 4

two slopes are perpendicular if
m1 = -1/m2

Answer 5

so it could be b and c?

Answer 6

look at the negative signs in C..... aint gonna work

Answer 7

ok thank you