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If M(4, 5) is a mid point of line segment AB and co-ordinate of A is (3, 4), then find the co-ordinate of point B. |
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Answer» Let co-ordinate of B is (x, y) Given : co-ordinate of mid point of (3, 4) and (x, y) 4 = (3 + x)/2 ⇒ 3 + x = 8 ⇒ x = 8 – 3 = 5 and 5 = (y + 4)/2 ⇒ y + 4 = 10 ⇒ y = 10 – 4 = 6 Hence, co-ordinate of B = (5, 6) |
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