\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Find the Cartesian equation of the line that passes through the point \(P(1, 2)\) and has a normal vector of \(\Vect{n} = \begin{pmatrix} 3 \\ 4 \end{pmatrix}\).
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