MOHON DIJAWAB BESOK DIKUMPULINNNNN

y-y1/y2-y1 = x-x1/x2-x1
y-4/-3-4 = x-(-7)/5-(-7)
y-4/-3-4 =x+7/5+7
y-4/-7=x+7/12
12(y-4)=-7(x+7)
12y-48=-7x-49
7x+12y=-49+48
7x+12y=-1