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anuramm
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 02:13
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Is the slope of line l > 0
A - The line passes through 3rd and 4th quadrant.
B - The line passes through 1st and 4th quadrant.

Thanks.



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Alex_NL
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 03:21
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I believe the answer is C

st.1
The slope of the line could be 0, >0 or <0

st.2
The slope of the line could be 0, >0 or <0

The statements together are sufficient to answer, because there is only one possibility the line can go through quadrant 1, 3, and 4. Assuming that we are talking about an straight line.

Please correct me if I am wrong.

Regards,

Alex
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stuti
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 05:18
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anuramm
Is the slope of line l > 0
A - The line passes through 3rd and 4th quadrant.
B - The line passes through 1st and 4th quadrant.

Thanks.
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Here's another one - D
if its right, will post my explanation
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 09:26
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It would be best to take numbers.
1. lets take (3,-4) and (-4,-5) - which is a line that's in the III and IV th quadrant. Slope = (y1-y2)/(x1-x2) = (-5+4)/(3+4) which is <0. However if the co-ordinates are (3,-2) and (-4,-5) the slope is >0. So, Insufficient.

2. Lets take (3,4) and (-4,-5) - which is a line that's in the Ist and IVth quadrant. Slope will be (4+5)/(3+4) >0 and will always be >0. So, Sufficient.

Ans is B.
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 09:32
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venksune
It would be best to take numbers.
1. lets take (3,-4) and (-4,-5) - which is a line that's in the III and IV th quadrant. Slope = (y1-y2)/(x1-x2) = (-5+4)/(3+4) which is <0. However if the co-ordinates are (3,-2) and (-4,-5) the slope is >0. So, Insufficient.

2. Lets take (3,4) and (-4,-5) - which is a line that's in the Ist and IVth quadrant. Slope will be (4+5)/(3+4) >0 and will always be >0. So, Sufficient.

Ans is B.
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Its B - didnt consider the other case :oops:
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 09:48
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Isnt (-4, -5) not in the third quadrant.

I assume that
(4, 5) 1st quadrant
(-4, 5) 2nd quadrant
(-4, -5) 3rd quadrant
(4, -5) 4th quadrant.

Please correct me if I am wrong.

Regards,

Alex
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Is the slope of line l > 0 A - The line passes through 09 Sep 2004, 11:07
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Oh Oh... thanks for pointing out Alex, my mistake...took the wrong values for the quadrants...let me do this again...


1. lets take (-3,-4) and (4,-5) - which is a line that's in the III and IV th quadrant. Slope = (y1-y2)/(x1-x2) = (-4+5)/(-3+4) which is >0. However if the co-ordinates are (-6,-4) and (4,-5) the slope is (-4+5)/(-6-4) which is 0 . Also the slope of the line could be 0.

Combining both we have slope of line = 0 which is not >0. Hence C.



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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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