(-1,1)becames? (0,0)becomes?(1,1)becomes?

(-1,1) becames 0, (0,0) becomes 0, (1,1) becomes 2

Trust Onepunchman (and maybe brainlist if I get it right)

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.