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9709 P12 - Nov 2009 - Q9
603

The diagram shows a rectangle ABCD. The point A is (0, -2) and C is (12, 14). The diagonal BD is parallel to the x-axis.

  1. Explain why the y-coordinate of D is 6.
  2. The x-coordinate of D is h. Express the gradients of AD and CD in terms of h.
  3. Calculate the x-coordinates of D and B.
  4. Calculate the area of the rectangle ABCD.
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