Question

The lines shown below are perpendicular. If the green line has a slope of3/4 , what is the slope of the red line?

Answer 1

http://media.apexlearning.com/Images/200609/13/ca75e81f-5424-49c1-b238-0348e5c49a74.gif

Answer 2

A. 3/4
B. 4/3
C. -4/3
D. -3/4

Answer 3

Perpendicular lines have slopes that are negative reciprocals.

So if a line has a slope of 3, a perpendicular slope would be -1/3.

Answer 4

how did you get that?

Answer 5

What? It's the definition. And an example.

Answer 6

All you have to do to find the perpendicular slope is: flip the fraction, and change the sign. Easy.

Answer 7

ohhh okay

Answer 8

So it would be C i think?

Answer 9

Well i have no idea what the slope of the green line is so idk

Answer 10

i cant figure it out either.

Answer 11

let me figire it out

Answer 12

Just find the slope from the graph, rise over run

Answer 13

right

Answer 14

the slope of the geen line is 3/4

Answer 15

i am so blonde it said it in the question

Answer 16

But when you posted it, it didn't say it

Answer 17

yeah my computer did not transfer the fraction over , i just figured that out.

Answer 18

so it think it might be c

Answer 19

Well if the original slope is 3/4, then you flip it and make it negative, and that's the perpendicular slope.

Answer 20

really that simple?

Answer 21

Yep. A lot of math is just that simple.

Answer 22

wow , the lesson made it seem so much harder . thank you

Answer 23

You're welcome.

Answer 24

could you possibly help me with one more just to make sure i get it

Answer 25

Okay

Answer 26

k ill post a new question