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mars1129 [50]
3 years ago
13

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 th

e pre-image point A.
Mathematics
1 answer:
natita [175]3 years ago
3 0

Answer:

<h3>             (8, –3)</h3>

Step-by-step 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)

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