Suppose there are n people on a bus. At the next stop, 4 more people get on the bus. No one gets off the bus. Draw a bar diagram to model the number of people now on the bus. Use this model to
write an algebraic expression for the number of people now on the bus.
Which bar diagram models the number of people now on the bus?

"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.

the rate of change is 25