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Mathematics 15 Online
OpenStudy (lucaz):

how do I check if it's true?

OpenStudy (lucaz):

OpenStudy (atlas):

x/y > 0 so either x and y are both positive or both negative case-1: x and y are both positive then, x/y > 0 => x >y But it is given x < y

OpenStudy (lucaz):

right, I will try now

OpenStudy (atlas):

So, case-2: x and y are both negative

OpenStudy (atlas):

ok

OpenStudy (jack1):

a is true...?

ganeshie8 (ganeshie8):

uhmm how x/y > 0 implies x > y ?

OpenStudy (lucaz):

wait, x/y=0 means x<y

OpenStudy (atlas):

i m wrong :(

OpenStudy (atlas):

x/y > 0 does not imply x>y

OpenStudy (jack1):

x/y > 0 so y/x > 0 ...?

OpenStudy (lucaz):

I'm stuck because they can be both neg and pos.

ganeshie8 (ganeshie8):

yes... also, -20/-10 > 0 so, u can strike off second and third options

OpenStudy (jack1):

logically i thing it has to be true... the others MAY be true, but not in all circumstances... i think...?

ganeshie8 (ganeshie8):

yup oly first option is correct

OpenStudy (lucaz):

I thought it was only the 'st option.. thank you guys!

ganeshie8 (ganeshie8):

np, trick question :)

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