
The coordinates of point A and B are (-2,-2) and (2,-4) respectively. since AP=\(\frac{3}{7}AB\)
Therefore, AP: PB=3:4
Point P divides the line segment AB in the ratio 3:4
Coordinates of P = \((\frac{3\times2+4\times(-2)}{3+4},\frac{3\times(-4)+4\times(-2)}{3+4})\)
=\((\frac{6-8}{7},\frac{-12-8}{7})\)
=\((-\frac{2}{7},-\frac{20}{7})\)
Determine if the points (1, 5), (2, 3) and (– 2, – 11) are collinear
In a classroom, 4 friends are seated at points A, B, C and D. Champa and Chameli walk into the class and after observing for a few minutes Champa asks Chameli, “Don’t you think ABCD is a square?” Chameli disagrees. Using the distance formula, find which of them is correct.
| Case No. | Lens | Focal Length | Object Distance |
|---|---|---|---|
| 1 | \(A\) | 50 cm | 25 cm |
| 2 | B | 20 cm | 60 cm |
| 3 | C | 15 cm | 30 cm |