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#1 2006-02-27 16:44:14
- ganesh
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Coordinate Geometry
CG # 1
Find the area of the triangle whose vertices are
(2, -3), (-1, 3) and (4, 7).
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
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#2 2006-02-27 18:32:13
- krassi_holmz
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Re: Coordinate Geometry
21
IPBLE: Increasing Performance By Lowering Expectations.
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#3 2006-02-27 19:45:29
- ganesh
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Re: Coordinate Geometry
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#4 2006-02-27 20:17:05
- krassi_holmz
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Re: Coordinate Geometry
That was easy. I solved it in Paint for~1min
IPBLE: Increasing Performance By Lowering Expectations.
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#5 2006-02-28 16:17:19
- ganesh
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Re: Coordinate Geometry
CG # 2
Find (x,y) if (3,2), (6,3), (x,y) and (6,5) are the vertices of a parellologram taken in order.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#6 2006-02-28 17:59:51
- krassi_holmz
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Re: Coordinate Geometry
{3,4}?
IPBLE: Increasing Performance By Lowering Expectations.
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#7 2006-02-28 19:41:06
- ganesh
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Re: Coordinate Geometry
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#8 2006-03-01 03:37:59
- mathsyperson
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Re: Coordinate Geometry
(9,6)?
Why did the vector cross the road?
It wanted to be normal.
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#9 2006-03-01 03:46:38
- ganesh
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Re: Coordinate Geometry
Correct, mathsyperson! 
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#10 2006-03-01 04:00:29
- ganesh
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Re: Coordinate Geometry
CG # 3
If 3x-2y+4=0 and ax+4y+3=0 are parallel lines, find the value of a.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#11 2006-03-01 06:17:02
- Patrick
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Re: Coordinate Geometry
CG# 3
a = -6?
Last edited by Patrick (2006-03-01 06:17:20)
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#12 2006-03-01 15:59:53
- ganesh
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Re: Coordinate Geometry
You're correct, Patrick! Well done! 
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#13 2006-03-01 16:13:04
- ganesh
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Re: Coordinate Geometry
CG # 4
Find the equations of the lines which pass through the point (3,4) and make intercepts on the axes such that their sum is 14.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#14 2006-03-01 18:08:18
- ryos
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Re: Coordinate Geometry
El que pega primero pega dos veces.
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#15 2006-03-01 18:25:24
- ganesh
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Re: Coordinate Geometry
They are the only equations for which the conditions work
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#16 2006-03-02 17:39:04
- ganesh
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Re: Coordinate Geometry
CG # 5
Find the equation of the perpendicular bisector of the line joining the points A(-1,2) and B(3,-4).
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#17 2006-03-06 16:22:15
- Dionysus
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Re: Coordinate Geometry
Last edited by Dionysus (2006-03-06 16:22:49)
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#18 2006-03-06 16:50:37
- ganesh
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Re: Coordinate Geometry
Excellent, Dionysus! 
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#19 2006-03-06 18:31:40
- ganesh
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Re: Coordinate Geometry
CG # 6
Prove that the lines 3x-4y+5=0, 7x-8y+5=0 and 4x+5y=45 are concurrent.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#20 2006-03-08 20:02:03
- ganesh
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Re: Coordinate Geometry
CG # 7
Show that the points (4, -4), (-4, 4), and (4√3, 4√3) are the vertices of an equilateral triangle.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#21 2006-03-09 16:50:39
- Dionysus
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Re: Coordinate Geometry
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#22 2006-03-10 03:00:46
- ganesh
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Re: Coordinate Geometry
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#23 2006-03-10 04:27:36
- ganesh
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Re: Coordinate Geometry
CG # 8
Find the equation of the straight line making an angle 135° with the positive direction of x-axis and cutting an intercept 5 on the y-axis.
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#24 2006-03-10 04:31:37
- mathsyperson
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Re: Coordinate Geometry
tan 135° = -1, so that is the gradient of the line. We are told that the y-intercept is 5, so the equation is y = 5-x.
Why did the vector cross the road?
It wanted to be normal.
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#25 2006-03-10 15:50:29
- ganesh
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Re: Coordinate Geometry
Very good, mathsyperson!
It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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