When a set of coordinates on a preimage is multiplied by -n instead of n, the coordinates of the image rotate about the center o
f dilation by 180°. Consider all the potential intervals of n in the table. Enter information in the table to indicate whether the scale factor produces an enlargement, a reduction, or no size change. Also indicate whether the image rotates 180° about the center of dilation.
The value of n determines whether the image is bigger or smaller than the preimage. If 0 < n < 1, the image is smaller than the preimage. If n = 1, the image is the same size as the preimage: the two are congruent. If n > 1, the image is larger than the preimage.
The answer is 192 book. the reason why is because if you have 12 books each in 16 rows, you would like to MULTIPLY to find out how much in total. so 1 12 ×16 --- 72 +120 ------- 192 books
