Point of Division Using Parameter
## Formula
For:
$$x=x_1+t(x_2-x_1),\quad y=y_1+t(y_2-y_1)$$
the point lies between $$a$$ and $$b$$ when:
$$0\le t\le1$$
## Usage
- Used to determine whether a point represented parametrically lies on the line segment joining two points.