Answer:
13 units
Step-by-step explanation:
Rectangle ABCD has coordinates A(-1,-6), B(-1,7), C(1,7), D(1,-6)
We want to find the length of AB.
We use the absolute value method to find the length of AB.
Since the first coordinates are the same for A(-1,-6) and B(-1,7).
The distance is given by;
![|AB|=|7--6| = |7 + 6| = |13| = 13](https://tex.z-dn.net/?f=%7CAB%7C%3D%7C7--6%7C%20%3D%20%20%7C7%20%2B%206%7C%20%20%3D%20%20%7C13%7C%20%20%3D%2013)
The length of AB is 13 units.