Determine the par of exchange between London and New York if £1 contained 61.635 grains of gold11/12 fine and $1 contained 25.8 grains of gold 9/10 fine

"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.

391.6 is the correct answer

b is the right answer