Jawabanmu

2014-03-02T21:14:51+07:00
2x - 5y + 1 = 0
-5y = -2x -1
y = -2x/-5 -1

m = -2/-5 = 2/5

y - 2 = 2/5 ( x + 5)
5y- 10 = 2x + 10
5y -2x = 10 + 10
5y - 2x = 20
5y -2x -20 = 0

 semoga benar 
5 3 5
2014-03-02T21:17:28+07:00
Garis sejajar maka gradiennya sama: m = 2/5
pers. garis: y - 2 = 2/5 ( x + 5)
y - 2 = 2/5x + 2
y = 2/5x + 4
atau
2x - 5y + 20 = 0
1 3 1