TeX Quellcode:

\begin{array}{lclcr} f(x) &=& -3x+12 \cr \cr f(-4) &=& -3 \cdot (-4)+12 &=& 24 \cr f(0) &=& -3 \cdot 0+12 &=& 12 \cr f(1) &=& -3 \cdot 1+12 &=& 9 \cr & \dots \end{array}