Question

5 } After a dilation with center (0,0), the image of DB is D'B'. I DB = 4.5 and D'B' = 18, the scale factor of this dilation is (1) (3) 4 (2) 5

Answer 1

Explanation:

The scale factor must be greater than 1 because the image of the segment is larger than the original segment.

To find the scale factor we just have to divide the length of the image by the length of the segment:

$\frac{18}{4.5}=4$

Answer:

(4) 4