if ab=1 and a is less than 0, which of the following statements cannot be true?
a) b is negative
b) b is less than a
c)as a increases,b decreases
d)as a increases, b increases

Question

bahrom7893 · Answer

b is negative.

bahrom7893 · Answer

oh sorry that' the one that is true..

bahrom7893 · Answer

* didn't read the question carefully:
c cannot be true..

anonymous · Answer

(d) cannot be true

bahrom7893 · Answer

thedestinaionsky, that doesn't make sense..

anonymous · Answer

b. b is less than a because in order for ab=1 but a to be less than o a and b both have to be -1

anonymous · Answer

so it is not true that b would be less because they are the same

anonymous · Answer

why bahrom7893

anonymous · Answer

all diference answer

anonymous · Answer

if you read my explanation you can see why my answer is correct :)

bahrom7893 · Answer

actually i think meganm is right

anonymous · Answer

I son't know

bahrom7893 · Answer

okay let's try again:
if ab=1 and a is less than 0, which of the following statements cannot be true?
a) b is negative .. TRUE
b) b is less than a.. FALSE, because be is actually -1/a

bahrom7893 · Answer

and on the number line they come in the following order:
-a, -1/a ,....,0,.....
which means that -1/a has to be bigger than -a

anonymous · Answer

most people pick d

bahrom7893 · Answer

you can't really tell with c and d, I'd say b

anonymous · Answer

oh my goodness i just clicked this question to answer real quick cuz its so easy and you guys are making it crazy lol.. the answer is b read my explination

bahrom7893 · Answer

yea megan I was tryin to prove it was b haha

anonymous · Answer

thank you bahrom lol

anonymous · Answer

if ab=1 and and be both have to be -1 there is no other thing that will make that answer true if a is less than 0 holy cow guys lol -1 x -1= 1

anonymous · Answer

which means b cannot be less than a

anonymous · Answer

i think beteen b and d

anonymous · Answer

AHH im done the answer is b

anonymous · Answer

yes but b is still not less than a

radar · Answer

and if a=-8, b=-1/8   Note as a decreases b has to increase to maintain a product of 1

radar · Answer

and vice versa as a increases b decreases

radar · Answer

a                  b
-------------------
    -8               -1/8
    -7               -1/7
    -6                -1/6
    -1                -1

Note a increases (going towards 0), b decrteases (going more negative)

radar · Answer

Choice C     forget D

anonymous · Answer

tank radar

radar · Answer

Good luck, sure brought up a lot of discussion.