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# help on C1 question.. watch

1. Hey,

I was wondering if someone could help me with question 8 of the C1 January 2005 paper.
It looks pretty straight forward; but i'm just not getting it.
At the moment part (a) is what I need help on; I know the answers, just not clear on the working out.
Here's the link to the paper; http://www.scribd.com/doc/10513746/C1-Jan-05

Any help is greatly appreciated
2. D is the midpoint of A and C so however far right you move from A to D, double it and thats the X coordinate. However far down you move from A to D, double it and work out how far below the X axis it would be and thats the Y coordinate. I don't know whether that explained it well but it's as simple as I could put it.
3. (Original post by iitsMee..x)
Hey,

I was wondering if someone could help me with question 8 of the C1 January 2005 paper.
It looks pretty straight forward; but i'm just not getting it.
At the moment part (a) is what I need help on; I know the answers, just not clear on the working out.
Here's the link to the paper; http://www.scribd.com/doc/10513746/C1-Jan-05

Any help is greatly appreciated
What's the formula for the midpoint of a line where you know both sets of coordinates?
4. D is the midpoint of AC. The formula for a midpoint is . Plug some numbers in and Bob's your uncle.
Or alternatively, do it the way mentioned above.

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