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RIJU · 2005 April 21st, 07:54 PM

Is the point (2,-4) on the line 2x+7y=1?
1) The point is on the line ...
2) The point is on another line ...
Pl explain in detail........

TwinnSplitter · 2005 April 21st, 10:16 PM

This is a weird question in that you don't need statement 1) or 2) to answer it, the question stem itself gives the answer. All you need to do to see if a point is on the line is plug the given values in and see whether they satisfy the equation.

In this case, 2(2) + 7(-4) = -24 which does not equal 1, so the point doesn't lie on the line.

2005 April 21st, 07:54 PM	#1 (permalink)
RIJU Eager! Join Date: Mar 2005 Posts: 58	Q Is the point (2,-4) on the line 2x+7y=1? 1) The point is on the line ... 2) The point is on another line ... Pl explain in detail........

2005 April 21st, 10:16 PM	#2 (permalink)
TwinnSplitter Within my grasp! Join Date: Dec 2004 Location: Chicago Posts: 421	Re: Q This is a weird question in that you don't need statement 1) or 2) to answer it, the question stem itself gives the answer. All you need to do to see if a point is on the line is plug the given values in and see whether they satisfy the equation. In this case, 2(2) + 7(-4) = -24 which does not equal 1, so the point doesn't lie on the line.

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