distance formula : sqrt ((x2 - x1)^2 + (y2 - y1)^2)
(-8,-2)....x1 = -8 and y1 = -2
(4,1)......x2 = 4 and y2 = 1
now we sub and solve
d = sqrt ((4 - (-8)^2 + (1 - (-2)^2)
d = sqrt ((4 + 8)^2 + (1 + 2)^2)
d = sqrt(12^2 + 3^2)
d = sqrt (144 + 9)
d = sqrt 153
d = 12.37 units <=== (and that is rounded)
