159k views
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

2 Answers

4 votes

Answer:

1/3

Explanation:

User Lostaunaum
by
7.8k points
3 votes
The scale factor is 7/21 = 1/3 . . . . . . corresponding to the 1st selection.

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You can also compute it from -3/-9 = 1/3.
User Noland
by
7.7k points