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Passing through two points with line equation
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Line Equation
A line equation passing through two points @@A(x_1, y_1)@@, @@B(x_2, y_2)@@ is
@@ \begin{vmatrix} 1 & x & y \\ 1 & x_1 & y_1 \\ 1 & x_2 & y_2 \end{vmatrix} =0@@