## anonymous one year ago The slopes of perpendicular lines are ______ ______ of each other, which means their product is -1. A. negative reciprocals B. positive reciprocals C. fractional reciprocals

1. anonymous

@UsukiDoll @butterflydreamer

2. anonymous

it's okay lol i need help though :(

3. butterflydreamer

what do you think it is?

4. anonymous

C ?

5. butterflydreamer

not quiteee...

6. anonymous

A.

7. anonymous

i dont think its b

8. butterflydreamer

okay so let's saayy... we have perpendicular lines and we are told $m_1 = 2 , m_2 = -\frac{ 1 }{ 2 }$ focussing on m_1 = 2 what is the reciprocal of 2?

9. anonymous

I dont know nothing about reciprocals 1 ?

10. butterflydreamer

reciprocal means to flip the number basically.. m = 2 = 2/1 right? the reciprocal will be 1/2 because we flipped 2/1 makes sense? but notice how m_2 = -1/2 ? isn't this negative of the reciprocal of m_1 = 2?

11. anonymous

yes

12. butterflydreamer

yep.. so, what would the answer be?

13. anonymous

negative

14. butterflydreamer

yuupppp

15. anonymous

thanks bae (:

16. butterflydreamer

yw.