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m = ∆y/∆x
= (y2-y1)/(x2-x1)
= (-6-4)/(3-(-2))
= -10/(3+2)
= -10/5
= -2
persamaan garis :
y-y1 = m(x-x1)
y-4 = -2(x-(-2))
y-4 = -2(x+2)
y-4 = -2x-4
y = -2x-4+4
y= -2x+0
atau
2x+y = 0