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Davisja21
04.02.2020 •
Mathematics
Point a is located at (2, 3). what is the location of a' given dilation with scale factor of 3 and a center of dilation at (-1, 6)?
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Ответ:
A'(8, -3)
Step-by-step explanation:
When the center of a dilation is not the origin, the location of a point A dilated about center C by scale factor k can be found as ...
A' = C + k(A -C) = kA +(1-k)C
That is, the distance from the center of dilation is multiplied by the scale factor.
For A(2, 3), k=3, C(-1, 6), the new point A' will be ...
A' = 3(2, 3) +(-2)(-1, 6) = (6, 9) +(2, -12)
A' = (8, -3)
Ответ:
0.9
Step-by-step explanation: