Answer:
Pre image ( 12 , 12)
Step-by-step explanation:
Given : Use ordered pair rule(x,y) (x-4,y+8) .
To find : find the pre image of (8,20)
Solution : We have given (x,y) →→(x-4,y+8) .
Let the pre image (x -4 ,y + 8 )
Post image ( 8 ,20 )
By the Transformation rule
(x-4,y+8) →→ ( 8 ,20 )
x - 4 = 8
On adding both sides by 4
x = 12.
y + 8 = 20
On subtracting both sides by 8
y = 20 -8
y = 12.
Pre image ( 12 , 12)
Therefore, Pre image ( 12 , 12)
