+0  
 
-1
673
1
avatar+1015 

The smaller triangle is the image of the larger triangle after a dilation. The center of the dilation is (4,2).

 

What is the scale factor used to create the dilation?

AngelRay  Nov 10, 2017
 #1
avatar+92943 
+1

We have that

 

< -8, 2>  =   [  <8, 2> - <4,2> ] * F   +  < 4,2>         where F is the scale factor

 

  ( < -8 , 2 >  - < 4, 2 >  )  =   <4,0 > * F

 

< - 12,  0  >   = < 4 , 0 > * F

 

So  F  = - 3    = the scale factor

 

 

 

cool cool cool

CPhill  Nov 10, 2017

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