F6 Maths 364
2011-12-11 9:06 pm
A ( -3, 2) and B (1, 3) are two points. C is a point on the AB produced such that AB:BC = 1:2. Find the coordinates of C.
回答 (1)
2011-12-11 9:20 pm
✔ 最佳答案
Let C(a,b)The x - coordinate of B is (2 * -3 + 1 * a)/(2 + 1) = 1 => a = 9
The y - coordinate of B is (2 * 2 + 1 * b)/(2 + 1) = 3 => b = 5
So, C(9,5)
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