# Passing through two points with line equation(???먯쓣 吏?섎뒗 吏곸꽑??諛⑹젙??

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