Which is the same as moving the decimal point 3 places to the left in a decimal number?
Dividing the number by 100
Multiplying the number by 1,000
Multiplying the number by 100
Dividing the number by 1,000

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.