Suppose the owner of a bicycle decides to hop on his bike and coast down a hill. if he starts at a point where the elevation is listed as 6500 ft. and coasts down to a point where the elevation is 6000 ft, and he sees from a map that the horizontal distance is listed as 1200 ft. then:
a. what is the percent grade of the hill?
b. what actual distance did he coast?

"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.