Answer:
Any scale factor greater than 1 result in a expansion or increase in size. Any scale factor less than 1 result in a shrinkage or decrease in size.
What is a scale factor?
a scale factor is a ratio between the scale of a given original object(pre-image) and a new object, (after-image or image after transformation) which is the same shape but of a different size (bigger or smaller).
Example & how to use scale factor:
let's say we have a triangle with a side length of 2, 2, and 3.
then we take that triangle and dilate it with a scale factor of 2.
the new side lengths become 4, 4, and 6 because they are being multiplied by 2 because the scale factor is 2.
Step-by-step explanation and answer:
1. A scale factor of 4 is an expansion because it's greater than 1
2. A scale factor of 9/7 or about 1.30 is an expansion because it's greater than one.
3. the rest are shrinkage scale factors because they're less than one.
Conclusion:
i hope this helps :)
geometry can be hard sometimes