Question

Using the transformation T: (x, y) (x + 2, y + 1), find the distance A'B'.
https://media.glynlyon.com/g_geo_2012/10/examp1.gif

Answer 1

A (0,0) --> ( 2,1) = A'
B(1,3) ---> ( 1+2, 3+1) = (3 ,4) = B'

A'B' = sqrt( (3-2)^2 + (4-1)^2) + sqrt10

Answer 2

In the answer there's something over the sqrt.

Answer 3

This is what they want the answer to look like:

Answer 4

square root