Simplify the expression -2b - 6 + 3b - 2

it is rigid.; it is isometric. ; the size is preserved.

step-by-step explanation:

a translation is called an isometry; these are transformations that preserve congruence between pre-images and images.

they are also called rigid transformations, as the only thing that can happen to a pre-image is that it is moved or turned, not stretched or shrunk.

since congruence is preserved, the size is preserved.

the scale is 1/9 my friend can't simplify 1 anymore so it will be (for every 1 there's 9)