Scale Factor < 0

What: Negative scale factor
Why: How to reverse a vector to point in the opposite direction
Time To Complete: 1-3 hours

v1  = {1,1};
v2 = -1*v1;

//list of pivots;
pivots = {{0,0}, {0,0}};

//list of vectors;
vectors = {v1,v2};

vectorplot pivots vectors;

save as scale;

Output