Jawabanmu

2014-02-05T20:59:23+07:00
2014-02-05T21:02:56+07:00
y-y1  = x-x1
y2-y1   x2-x1

y-(-1) = x-3
4-(-1)    -2-3

y+1 x-3
4+1    -2-3

y+1x-3
  5        -5

-5 (y+1) = 5 (x-3)

-5y-5 = 5x-15

-5y-5-5x+15 = 0
-5y-5x+10 = 0
1 5 1