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2y = -3x + 0 y+5 =-2/-3 ( x+5)
y = -3x/2 + 0 -3y-15 = -2 (x+5)
-3y = -2x + 5 + 15
m1 = -3/2 -3y = -2x + 20
karena tegak lurus maka m2 = -1/m1 2x-3y-20=0
-1/-3/2
-2/-3