Question

16. Is the line through points P(–8, –10) and Q(–5, –12) perpendicular to the line through points R(9, –6) and S(17, –5)? Explain. (1 point)
Yes, their slopes are different.
No, their slopes are not opposite reciprocals.
No, their slopes are not the same.
Yes, their slopes have the same number in them.

Answer 1

Use (Y2-Y1)/(X2-X1) to find the slopes of each lines. If one is the negative reciprocal of the other, then they are perpendicular.

Answer 2

so is the answer a cause their slopes are different?

Answer 3

I dont like math -.- im going with B

Answer 4

oh crap i meant C

Answer 5

cause if thier slopes are different then its not perpendicular. its C

Answer 6

No im great with every other class i just hate math!

Answer 7

He's right. You're lazy.

Answer 8

I gave you the procedure, follow it!

Answer 9

omg fine give me a second!

Answer 10

So its -2/3

Answer 11

and since on is negative they are perpendicular?

Answer 12

one*

Answer 13

Ok the slope of the first one is -2/3. What about the second one?

Answer 14

oh wait hold on

Answer 15

1/8

Answer 16

So -2/3 and 1/8 and those are perpendicular right cause one is a negative?

Answer 17

I thought if something had the same slope than meant it was perpendicular?

Answer 18

They're not perpendicular because one is not the negative reciprocal of the other.

Answer 19

If they were 2/3 and -3/2, they would be perpendicular. Or 7/8 and -8/7. Or 15/100 and -100/15

Answer 20

Same slope = parallel

Answer 21

what exactly does that mean -.- i feel so dumb im 18 and dont know this pellet

Answer 22

Negative reciprocal means you invert the fraction and make it negative. So can you find the negative reciprocal of 5/6?

Answer 23

-6/5

Answer 24

Good :) So if the slopes aren't negative reciprocals of each other, they're not perpendicular!

Answer 25

ohh so the answer is B woop yay :D

Answer 26

:D

Answer 27

you are awesome :) Thanks so much!