## heyheuhru 3 years ago The dashed figure is a dilation of the original figure. Find the scale factor. Classify the dilation as an enlargement or a reduction.

1. heyheuhru

here is the figure

2. irkiz

see the x coordinate of the vertical line in changes from x = 2 to x = 6

3. irkiz

that should tell you the scale factor

4. heyheuhru

um 3?

5. irkiz

nope

6. irkiz

it changes to x = 6 but the sharp point shifts left by 2

7. heyheuhru

:/ is it a reduction?

8. irkiz

so in total its like from x = 2 to x = 8

9. heyheuhru

I'm confused

10. irkiz

shift the dotted figure to the right till the sharp point coincides with the original one

11. irkiz

you have to shift by 2. so that means the vertical like is at x = 8

12. heyheuhru

the sharp point??

13. irkiz

uh the left sharp point

14. heyheuhru

here are the options for the scale point: scale factor ; reduction scale factor 4; enlargement scale factor 3; enlargement scale factor ; reduction

15. irkiz

16. heyheuhru

so move the larger triangle to the right?

17. irkiz

|dw:1353133642578:dw| shift the dotted one till point a is the same for the dotted and original one

18. irkiz

then check where the line bc is for the dotted and original one

19. irkiz

the original line is at x = 2 the dotted one is at x = 8

20. heyheuhru

hmmm so would that be 1/4?

21. irkiz

scale factor is 4 yes

22. irkiz

and the dotted one is the changed one. it is bigger so...

23. irkiz

24. heyheuhru

4 enlargement?

25. irkiz

yup

26. heyheuhru

wooh!