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#### Example: LF.DA.0  with GeoGebra .

•  Composition and Core ¤

Theorem: LF.COMP. :
For any $m$ and $b$, $f(x)=mx+b$ if and only if
$f=f_{+b}∘f_m$ where $f_m(x)=m∗x$ and  $f_{+b}(x)=x+b$.

##### Example:  LF.DINV.0  with GeoGebra .

• Solving Linear Equations with Linear Functions ¤
##### Example: LF.DLEQ.0  with GeoGebra

• Bonus: A 3D Mapping Diagram for a Linear Function of 2 Variable ¤