Aty100
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So I've just come across the following question and it's probably really simple but I have no idea what to do :/

The line joining the points A(4,5) and B(p,q) has the midpoint M(-1,3). Find the points p and q.

Do you just do the inverse of the midpoint equation ?
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Duke Glacia
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(Original post by Aty100)
So I've just come across the following question and it's probably really simple but I have no idea what to do :/

The line joining the points A(4,5) and B(p,q) has the midpoint M(-1,3). Find the points p and q.
Whats the equation for a midpoint ?
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Andy98
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(Original post by Aty100)
So I've just come across the following question and it's probably really simple but I have no idea what to do :/

The line joining the points A(4,5) and B(p,q) has the midpoint M(-1,3). Find the points p and q.
You know how to find the Midpoint?
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Andy98
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Dang, ninjah'd
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jamestg
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(Original post by Aty100)
So I've just come across the following question and it's probably really simple but I have no idea what to do :/

The line joining the points A(4,5) and B(p,q) has the midpoint M(-1,3). Find the points p and q.

Do you just do the inverse of the midpoint equation ?
Yes you do the inverse of the midpoint equation!
Spoiler:
Show
(4+p)/2 = -1

(5+q)/2 = 3

Solve from there, and it's easy peasy!
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jamestg
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(Original post by Duke Glacia)
Whats the equation for a midpoint ?
x coordinate = (x1+x2)/2

y coordinate = (y1+y2)/2
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Aty100
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(Original post by jamestg)
Yes you do the inverse of the midpoint equation!
Spoiler:
Show
(4+p)/2 = -1

(5+q)/2 = 3

Solve from there, and it's easy peasy!
Lol I knew it, i always over complicate things

P=-6
Q= 1
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jamestg
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[QUOTE=Aty100;60779325]
(Original post by jamestg)
Yes you do the inverse of the midpoint equation!
Spoiler:
Show
(4+p)/2 = -1

(5+q)/2 = 3

Solve from there, and it's easy peasy!
[/QUOTE

Lol I knew it, i always over complicate things

P=-6
Q= 1
The trick with something like that is, if you've got part of a problem and a solution to that problem you should be able to work back. This same logic applies to something as simple as doing 5+y=8 and finding y pretty much.
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