Question

Whats the distance between {-4 , 12} and {18 , 12}

Answer 1

You would need to use the distance formula.
Distance = Sqrt((x2-x1)^2+(y2-y1)^2)
Plug in your numbers
Distance = Sqrt((12+4)^2+(12-18)^2)
Distance = 17.09

Answer 2

The answer would be 22 18+4 if you get what I'm sayinv