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Graph the image of the figure after a dilation with a scale factor of 2 centered at (−7, −2) .

Use the Polygon tool to graph the quadrilateral by connecting all its vertices.

 Dec 13, 2018
 #1
avatar+98034 
+1

Formula

 

New Point = [ old point - dilation center ] * scale factor + dilation center

 

So

 

For   (-1, 1) 

[ (-1, 1) - (-7, -2) ] * 2  + (-7, -2)  =  [ 6, 3] *2 + (-7, -2)  = [ 12, 6] + (-7, -2) = (5, 4)

 

For (-3, -2)

[  (-3, -2) - (-7, -2) ] *2  + (-7, -2) = [ 4, 0]*2 + (-7, -2) = [ 8, 0 ] + (-7, -2) = (1, -2)

 

For (-4, 3)

[ (-4,3) - (-7 , -2) ]*2 + (-7, -2)  = [ 3, 5]*2 + (-7, -2) = [ 6, 10] + (-7, -2) = (-1, 8)

 

For (-6, 2) 

[ (-6, 2) - (-7, -2) ] *2 + (-7, -2) = [ 1, 4]*2 + (-7, -2) = [ 2, 8] + (-7, -2) = (-5, 6)

 

 

Graph the points in red and connect them to form a quadrilateral

 

 

 

cool cool cool

 Dec 13, 2018

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