Please help!! At first, there were 930 women and men at a funfair altogether. After 4/5
the women and 1/2
of the men had left, a total of 360 men and women
remained at the funfair. How many women were there at the funfair at first?

"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.