Nikkibaby71410
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.
Delete
Share
This Question is Closed
BluFoot
Best Response
You've already chosen the best response.
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.
Nikkibaby71410
Best Response
You've already chosen the best response.
0
so is the answer a cause their slopes are different?
Nikkibaby71410
Best Response
You've already chosen the best response.
0
I dont like math -.- im going with B
Nikkibaby71410
Best Response
You've already chosen the best response.
0
oh crap i meant C
Nikkibaby71410
Best Response
You've already chosen the best response.
0
cause if thier slopes are different then its not perpendicular. its C
Nikkibaby71410
Best Response
You've already chosen the best response.
0
No im great with every other class i just hate math!
BluFoot
Best Response
You've already chosen the best response.
1
He's right. You're lazy.
BluFoot
Best Response
You've already chosen the best response.
1
I gave you the procedure, follow it!
Nikkibaby71410
Best Response
You've already chosen the best response.
0
omg fine give me a second!
Nikkibaby71410
Best Response
You've already chosen the best response.
0
So its -2/3
Nikkibaby71410
Best Response
You've already chosen the best response.
0
and since on is negative they are perpendicular?
Nikkibaby71410
Best Response
You've already chosen the best response.
0
one*
BluFoot
Best Response
You've already chosen the best response.
1
Ok the slope of the first one is -2/3. What about the second one?
Nikkibaby71410
Best Response
You've already chosen the best response.
0
oh wait hold on
Nikkibaby71410
Best Response
You've already chosen the best response.
0
1/8
Nikkibaby71410
Best Response
You've already chosen the best response.
0
So -2/3 and 1/8 and those are perpendicular right cause one is a negative?
Nikkibaby71410
Best Response
You've already chosen the best response.
0
I thought if something had the same slope than meant it was perpendicular?
BluFoot
Best Response
You've already chosen the best response.
1
They're not perpendicular because one is not the negative reciprocal of the other.
BluFoot
Best Response
You've already chosen the best response.
1
If they were 2/3 and -3/2, they would be perpendicular. Or 7/8 and -8/7. Or 15/100 and -100/15
BluFoot
Best Response
You've already chosen the best response.
1
Same slope = parallel
Nikkibaby71410
Best Response
You've already chosen the best response.
0
what exactly does that mean -.- i feel so dumb im 18 and dont know this pellet
BluFoot
Best Response
You've already chosen the best response.
1
Negative reciprocal means you invert the fraction and make it negative. So can you find the negative reciprocal of 5/6?
Nikkibaby71410
Best Response
You've already chosen the best response.
0
-6/5
BluFoot
Best Response
You've already chosen the best response.
1
Good :) So if the slopes aren't negative reciprocals of each other, they're not perpendicular!
Nikkibaby71410
Best Response
You've already chosen the best response.
0
ohh so the answer is B woop yay :D
BluFoot
Best Response
You've already chosen the best response.
1
:D
Nikkibaby71410
Best Response
You've already chosen the best response.
0
you are awesome :) Thanks so much!