Question

Help plz?

Answer 1

It should be the negative reciprocal

Answer 2

For example if AB has slope 1/2 and it's perpendicular to CD, then CD has slope
-1/(1/2)=-2
Another example: AB has slope 5/7 and it's perpendicular to CD, then CD has slope
-1/(5/7)=-7/5 Basically flip it and put the opposite sign.

Answer 3

so it's 2/5 ?

Answer 4

flip it over and put the opposite sign (pos becomes neg and neg becomes pos)

Answer 5

2/5 was the original slope given so you have...

Answer 6

-5/2