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m1=-1/-3
m1=¹/₃
sejajar gradien sama
persamaan garis⇒y-y1=m(x-x1)
y-5=¹/₃(x+2)
3y-15=x+2
x-3y+2+15=0
x-3y+17=0
y=-3/-1-2
y=3x-2
karna sejajar m1=m2
gradien m= 3
gradien melalui satu titik (-2,5)
y-y1=m(x-x1)
y-5=3(x+2)
y-5=3x+6
3x-y+6+5=0
atau
y-3x-5-6=0
maaf kalo salah.