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For the dilation, Do, k = (10, 0 ) —> (5,0) , the scale factor is equal to ____.

•-5
•5
•0.5
•2

For the dilation, Do, k = (10, 0 ) —> (5,0) , the scale factor is equal to ____. •-5 •5 •0.5 •2-example-1
User Sean Woods
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Answer:

•0.5

Explanation:

We'll assume the dilation was done at the origin point, so it was done evenly.

Since the k point went from (10,0) to (5,0), we know it was reduced... so the scale factor has to be below 1. A scale factor means the size wasn't changed and a dilation/scale factor larger than 1 means it was enlarged.

So, we take the new X-value (5) and divide it by the original X-value (10).

Scale factor = 5/10 = 1/2... so 0.5

User Sandor Davidhazi
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