Jawabanmu

2014-01-22T18:35:21+07:00
Hasilnya nti jadi 18x-3y-51=0

tolong diuraikan caranya yah ka :)
(x-x1)/(y2-y1)=(y-y1)/(y2-y1)
=(x-2)/(-1-2)=(y-5)/(23-5)
=(x-2)/(-3)=(y-5)/(18)
18x-36= -3y+15
18x+3y-51=0