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jadikan kedalam bentuk ax+by+c=0
4y= -3x+5 maka -3x-4x+5=0
m ( m1)
karena tegak lurus maka m1 x m2 = -1
titik (-1,2)
jadi x1 = -1 , y1 = 2
jadi persamaan garisnya 4x-3y+10=0