There are sixteen one dollar bills in a wallet, three fives, two tens and four twenties. Suppose I draw from the wallet at random to give you one of the bills. What is the probability that I draw you out a five dollar bill?

"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.

i think the answer is b x = 1, y = 35/2