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-5y=-2x+8
y=2/5 x - 8/5,m1=2/5
karena sejajar maka m1=m2
jadi m2=2/5
x1=7 y1=2
y-y1=m2(x-x1)
y-2 =2/5(x-7)
y-2=2/5 x -14/5
y=2/5 x - 14/5 +2
y= 2/5 x -4/5,atau
(y=2/5 x -4/5) dikali 5
5y=2x-4
5y-2x+4=0