Question

Recommending a Scale Factor for Given Shapes
On a coordinate plane, a smaller star is enlarged by around 1.5 to form a larger star.

The smaller star has been enlarged.

Which is a good estimated scale factor, according to your evaluation of the coordinate changes?
2
1.5
1
One-half

Answer 1

1.5

Reason: an enlargement multiplies coordinates by a factor >1. To check, pick any corresponding point on the small and large stars and divide the large coordinate by the small coordinate; the ratio should be about 1.5. (2 would be too large, 1 means no change, one-half is a reduction.)