The smaller triangle is the image of the larger triangle after a dilation. The center of the dilation is (−3,−2).

What is the scale factor used to create the dilation?

AngelRay
Nov 20, 2017

#1**+1 **

Let C = (-3, -2)

Let A = ( 5, -2)

Let A' = ( -5, - 2)

So we have that

< A' > = < A - C > *(Scale Factor) + < C >

< -5, -2 > = < 8, 0 > *(Scale Factor) + < -3, -2 >

< -2, 0 > = < 8, 0 > * (Scale Factor )

So

-2 = 8 * Scale Factor ....... divide both side by 8

- (1/4) = Scale Factor

CPhill
Nov 21, 2017