Somebody else get in on this argument...
On the graph is point P (1,-2)
The center of dilation is at (10,10)
The scale factor is 2.5
I say that the answer for the new P also called P' is at (-12.5,-20)
The other person says (12.5,5)
Someone please say who is correct

Question

Somebody else get in on this argument...
On the graph is point P (1,-2)
The center of dilation is at (10,10)
The scale factor is 2.5
I say that the answer for the new P also called P' is at (-12.5,-20)
The other person says  (12.5,5)
Someone please say who is correct

camper4834 · Answer

@MrNood why did you start typing then didn't finish!

mrnood · Answer

|dw:1416133450195:dw|

change  in y CP = 10 --2 =12
change in x  CP = 10 -1 = 9

so if oyu dilate by 2.5 those values increase by 2.5

so changein in y CP' = 12 * 2.5 = 30 so new point is 10 - 30 0= -20
change in x CP' = 9 *2.5 = 24.5 so new point is 10- 22.5 = -12.5