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An image has point W'(7, -3), and the pre-image has point W(21, -9). What scale factor was used to dilate the pre-image? 1/3 1/9 3 9

An image has point W'(7, -3), and the pre-image has point W(21, -9). What scale factor was used to dilate the pre-image? 1/3 1/9 3 9
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1 vote
An image has point W'(7, -3), and the pre-image has point W(21, -9). What scale factor was used to dilate the pre-image?

1/3
1/9
3
9

asked
User OjamaYellow
by
8.2k points

2 Answers

4 votes

Answer:

1/3

Explanation:

answered
User Lostaunaum
by
8.4k points
3 votes
The scale factor is 7/21 = 1/3 . . . . . . corresponding to the 1st selection.

___
You can also compute it from -3/-9 = 1/3.
answered
User Noland
by
8.2k points
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