Question

The length of the line segment AB is ______ units.

• A. $6$
• B. $7$
• C. $1$
• D. $8$

Answer 1

The correct option is A $6$

The line segment is not placed at $0$. Hence, the length of the line segment $AB$ can be found by finding the difference in the position of its endpoints.
In this example point, $A$ is at $1$ unit and $B$ is at $7$ units.
The length of $AB=|7-1|$
$=6$ units
The length of the line segment $AB$ is $6$ units.