Respostas

2014-04-10T12:49:58-03:00
Xm = xa + xb / 2
xm = 4 + (-2) / 2
xm + 2 / 2
xm = 1

ym = ya + yb / 2
ym = 5 + 1 / 2
ym = 6 / 2
ym = 3
(1;3)

m = Δy / Δx
m = 5 -1 / 4 + 2
m = 4 / 6
m = 2 / 3

mab × mm = -1
2/3 ×mm = -1
mm = -3/2

(y-y0)=m(x-x0)
y-3=-3x-1
3x + 2y -5 =0
5 2 5