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Find the ratio in which the point P (m, 6) divides the join of A (-4, 3) and B (2, 8). Also, find the value of m. |
Answer» Let P divides the join of A and B in the ratio k : 1, then Step 1: Find coordinates of P: 6 = (k × 8 + 1×3)/ (k+1) => 6k + 6 = 8k + 3 or k = 3/2 P divides the join of A and B in the ratio 3:2 Step 2: Find the value of m m = (2k-4)/(k+1) = (2×3/2 – 4)/(3/2+1) = -1/(5/2) = -2/5 |
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