Equation of a Line Passing Through Two Fixed Points

Rarely Tested

Equation of a Line Passing Through Two Fixed Points

## Formula

For fixed points $$A(x_1,y_1)$$ and $$B(x_2,y_2)$$:

$$\frac{y-y_1}{y_2-y_1}=\frac{x-x_1}{x_2-x_1}$$

## Usage

- Used to obtain the unique straight line determined by two points.

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