Jawabanmu

2014-04-10T17:46:24+07:00
Y = mx +c
6y=-2x+12
m = -2

tegak lurus
m1.m2 = -1
-2.m2=-1
m2 = 1/2

y-y1=m(x-x1)
y+2=1/2 (x+4)
y+2=1/2x+2
y=1/2x +2-2
y=1/2x

2014-04-10T17:47:33+07:00
M=-a/b=-2/6=-1/3
m1*m2=-1
-1/3*m2= -1
m2=3

y-y1=m(x-x1)
y+2=3(x+4)
y=3x+12-2
y=3x+10
atau
 -3x+y-10=0
semoga bermanfaat
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