formula for the distance between two points is:
d= √(y2-y1)+(x2-x1) (note that everything is under one square root)
If points are (-2, -6) and (3,6)
that means that x1= -2, y1=-6
x2=3, y2= 6
Plug into the formula:
d=√(6-(-6))+(3-(-2))
d=√(6+6)+(3+2)
d=√17