1MA0 Higher November 2013 Paper 1 Q17
17 \(AB\) is a line segment.
\(A\) is the point with coordinates (3, 6, 7).
The midpoint of \(AB\) has coordinates \((-2, 2, 5)\).
Find the coordinates of \(B\). (2)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| (3,6,7) to \((-2,2,5)\) \((-5, -4, -2)\) \((-2 - 5, 2 - 4, 5 - 2)\) | \((-7, -2, 3)\) | 2 | M1 for midpoint plus change or complete method for 2 out of 3 coordinates, can be implied by 2 correct values A1 cao |