The polygons are scaled by applying the following transformation.
A)X'=x * Sx + Xf(1-Sx) & Y'=y * Sy + Yf(1-Sy)
B)X'=x * Sx + Xf(1+Sx) & Y'=y * Sy + Yf(1+Sy
C)X'=x * Sx + Xf(1-Sx) & Y'=y * Sy - Yf(1-Sy)
D)X'=x * Sx * Xf(1-Sx) & Y'=y * Sy * Yf(1-Sy)

Question

Quizplus · Accepted Answer

The correct transformation for scaling polygons involves scaling factors $Sx$ and $Sy$ for the x and y coordinates, respectively, and also involves a fixed point $(Xf, Yf)$ around which the scaling is performed. The formula $X'=x * Sx + Xf(1-Sx)$ and $Y'=y * Sy + Yf(1-Sy)$ correctly accounts for both the scaling and the translation needed to scale about a point other than the origin.

The Polygons Are Scaled by Applying the Following Transformation