Orthogonale Affinität

Koordinatenform:

$\def\arraystretch{1.25} \begin{array}{rcl}x' &=& x\\y' &=& k\cdot y\end{array}$

Matrixform:

$\begin{pmatrix}x' \\y'\end{pmatrix} = \begin{pmatrix} 1 & 0 \\0 & k\end{pmatrix}\cdot \begin{pmatrix}x \\y \end{pmatrix}$