Question

On the coordinate plane below, what is the length of AB?

8 units
9 units
14 units
15 units

Answer 1

14 units Just count from -9 to 5 or do 5-(-9) both equal 14

Answer 2

Since the y coordinates of A and B are the same we only need to find the difference of the x coordinates to find the length of AB.

5--9

5+9

14 units