CK12 - Geometry

matricesrepresentthe numbersof eachmodelavailablein eachwarehouseby region.

EasternRegion WesternRegion

Model Model

Warehouse Warehouse

To preparea report,Stuartaddsthe two matrices.This will give him the combinedinformationfor both regions.

a) Whatdoesthe meanin the sum matrix?

is the total numberof Model itemsin both Warehouse buildingsin both regions.

b)HowmanyModel itemsare therein all?

Thereare Model items: in both Warehouse buildingsand in both Warehouse buildings.

c) How manyitems—anymodel,any location—aretherein all?

. This is the sum of all the elementsin the sum matrix:

Translations

You workedwith translationsin the coordinateplaneearlier.

• A translationmoveseachpoint a horizontaldistance and a verticaldistance.


• 
  

  The imageof point is the point.

  
  

Matrixadditionis one way to representa translation.

Recallthe trianglein example2.