Stage 20 · Coordinates & First Functions

20.3.2 Scaling Centered at the Origin

20.3 Similarity and Scaling in Coordinates

Point 2 of 4

20.3.2 Scaling Centered at the Origin

Core idea

Stretch the picture out from the origin like a rubber band by a factor of k, and every point's coordinates get multiplied by k to become (kx, ky).

Module goal. Use whole-plane scaling to understand enlarging and shrinking a shape, and see clearly what multiplying by a ratio means geometrically

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