Find the scale factor of a dilation
Divide an image coordinate by the matching original coordinate.
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A dilation from the origin maps the point (2, 2) to (10, 10). What is the scale factor?
Answer: 5
A dilation from the origin maps the point (−6, −2) to (−30, −10). What is the scale factor?
Answer: 5
A dilation from the origin maps the point (1, 2) to (4, 8). What is the scale factor?
Answer: 4
Tip: Divide an image coordinate by the matching original coordinate.
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