Define rational algebraic expression

an algebraic expression is An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations

Step-by-step explanation:

what is the original number? you forgot to add it.

"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.