To solve this problem, we need to use the distance formula. 
Distance = 

x1 = -9
x2 = 2
y1 = -7
y2 = -6
Plug your numbers in
Distance = 
 . Simplify each parenthesis.
. Simplify each parenthesis.
Distance = 
 . Add these numbers together and take the square root.
. Add these numbers together and take the square root.
Distance = √(122) or 11.05 units.