3
correct me if im wrongg!!!
You might need to use the distance formula
for the distance betwen (x1,y1) and (x2,y2) is

so find disance between (-3,1) and (-1,3)
and (-1,3) and (3,1)
so
if we did input them
we would get

which is the peirmiter
28,
70 + 35 = 105, then divide by 3,000 which equals 28.57142857143, but you want a full human so you round down to 28
Y=-2x-3 thats the final answer