Jawabanmu

2014-04-22T19:17:01+07:00
Y-y1 = m (x-x1)
y-8 = -1/2 (x+10)
y = -1/2x -5+8 = -1/2 x+3
2014-04-22T19:19:16+07:00
Y - b = m ( x - a )
y - 8 = -1/2 ( x + 10 )
y -8 = -1/2x - 5
y + 1/2 - 8 +5 = 0