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



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heyheuhru
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here is the figure

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

irkiz
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that should tell you the scale factor

heyheuhru
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um 3?

irkiz
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nope

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

heyheuhru
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:/ is it a reduction?

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

heyheuhru
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I'm confused

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

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

heyheuhru
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the sharp point??

irkiz
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uh the left sharp point

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

irkiz
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i know the answer i am just trying to help you get it

heyheuhru
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so move the larger triangle to the right?

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

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

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

heyheuhru
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hmmm so would that be 1/4?

irkiz
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scale factor is 4 yes

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

irkiz
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you should know the answer

heyheuhru
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4 enlargement?

irkiz
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yup

heyheuhru
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wooh!