Coordinate Geometry

• **Distance formula**

The distance between the points P (*x*_{1}, *y*_{1}) and Q (*x*_{2}, *y*_{2}) is given by

$\mathrm{PQ}=\sqrt{{\left({x}_{2}-{x}_{1}\right)}^{2}+{\left({y}_{2}-{y}_{1}\right)}^{2}}$

**Example 1:**

Find the values of *l*, if the distance between the points (–5, 3) and (*l*, 6) is 5 units.

**Solution:**

The given points are A (–5, 3) and B (*l*, 6).

It is given…

To view the complete topic, please