Jawabanmu

2014-04-28T20:43:08+07:00
-3(y+6) = 3(x+1)
-3y - 18 = 3x + 3
-3x - 3y = 21

21/3 = 7
-x - y = 7
x + y = -7

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Jawaban paling cerdas!
2014-04-28T20:51:03+07:00
M= -6-(3)
     -1-(-4)
= -6+3
    -1+4
=-3    = -1
   3
m₁xm₂= -1
-1xm₂= -1
m₂= -1x-1=1

y-y₁=m (x-x₁)
y-(-6)=1 (x-(-1))
y+6=1 (x+1)
y+6=x+1
y=x+1-6
y= x-5
y-x= -5
atau x-y= -5
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