Answer:
(x,y)↦ ( x + 1 ) , ( y + 9 )
scale factor 2
Step-by-step explanation:
Step 1 identify the translation.
To do this we find the center of ⨀T and the center of ⨀T' and find the difference between their x and y values.
The center of ⨀T is at ( -1 , -7 )
The center of ⨀T' is at ( 0 , 2 )
we now find the difference between the x and y values. ( note that you must subtract the x and y values from the preimage from the translated image to get the correct translation. )
For the x values: 0 - ( - 1 ) = + 1
For the y values: 2 - ( -7 ) = + 9
So translation was (x,y)↦ ( x + 1 ) , ( y + 9 )
step 2 Find the scale factor
We can identify the scale factor by dividing the radius of the preimage by the radius of the dilated image.
The radius can be identified by finding the distance between the center and any point on the circle
The radius of the preimage is 3
The radius of the dilated image is 6
So scale factor = 6 / 3 or 2
