Respuesta :
slope=m=(2-5)/(8-2)=-3/6=-1/2
y=mx+b
y=-x/2+b, using (8,2) we have:
2=-8/2+b
2=-4+b
b=6
y=-x/2+6 or more neatly
y=(-x+12)/2
y=mx+b
y=-x/2+b, using (8,2) we have:
2=-8/2+b
2=-4+b
b=6
y=-x/2+6 or more neatly
y=(-x+12)/2