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ColinF686
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Re: Are x and y both positive? 1) 2x - 2y = 1, 2) x/y > 1

by ColinF686 Fri Mar 11, 2016 7:05 am

Question can be written as : is x, y >0
1. give x-y =1/2
2. gives
x >y if y>0
x <y if y <0

1. tells x is to the right of y on number line i.e. x>y
2. tells x and y are of the same sign and x>y if both are positive or x <y if both are negative

Combining 1&2--> x>y and x,y>0
tim
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Re: Are x and y both positive? 1) 2x - 2y = 1, 2) x/y > 1

by tim Fri Mar 11, 2016 3:58 pm

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vishalc581
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Re: Are x and y both positive? 1) 2x - 2y = 1, 2) x/y > 1

by vishalc581 Tue Jun 14, 2016 4:00 am

RonPurewal wrote:
vishalc581 wrote:Statement 2: x>y


think about the step that gets you from the original statement (x/y > 1) to this version.

now, think about when you can actually perform that step. (i.e., "I can only do that to both sides if I know that ______________").



Thanks! Again Ron :)
Thanks & Regards,
Vishal
cgentry
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Re: Are x and y both positive? 1) 2x - 2y = 1, 2) x/y > 1

by cgentry Tue Jun 14, 2016 4:17 pm

That's why Ron is awesome! Good luck vishalc581!
RonPurewal
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Re: Are x and y both positive? 1) 2x - 2y = 1, 2) x/y > 1

by RonPurewal Thu Jun 23, 2016 6:14 pm

you're welcome.