196k views
1 vote
The image point of A after a translation right 4 units and down 4 units is the point B(12, – 7). Determine the coordinates of the pre-image point A.

User Paxdiablo
by
8.5k points

1 Answer

4 votes

Answer:

(8, –3)

Explanation:

Translation right or left means change of the x-coordinate.

Translation up or down means change of the y-coordinate.

Translation right or up means adding.

Translation left or down means subtracting.


A=(x_A, y_A)\quad\rightarrow\quad B=(x_A+4,\,y_A-4)\\\\x_A+4=12\qquad\qquad y_A-4=-7\\\\x_A=12-4\qquad\qquad y_A=-7+4\\\\x_A=8\qquad\qquad\qquad y_A=-3\\\\A=(8,-3)

User Sdgfsdh
by
7.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories