Which graph represents an exponential function? On a coordinate plane, a curve decreases rapidly and then levels out. On a coordinate plane, a curve decreases, changes directions, and then decreases again. On a coordinate plane, 2 curves mirror each other. On a coordinate plane, a line curves increases gradually.

"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.