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gradien persamaan k
2x - y + 5 = 0
m = -x/y
m = - 2 / -1
m = 2
maka gradien garis n
m1 x m2 = -1
2 x m2 = -1
m2 = -1/2
a = 2
b = -1
mk =
mk =
mk =
mk = 2
karena garis n tegak lurus garis k, maka :
mn =
mn =
mn =