Question

Line segment AB has a length of 3 units. It is translated 2 units to the right on a coordinate plane to obtain line segment A′B′. What is the length of A′B′?

1 unit
2 units
3 units
5 units

Answer 1

It is still 3.

Explanation:

We only translated it, so we just moved it over to the side. Translating cannot take away length.

Answer 2

the length of a'b' is the same as ab because it is the same image so it is 3 units