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y=-4,5x-5
a1=-4,5=-9/2
a2=współczynnik,, a ,, prostej prostopadłej
a1*a2=-1
-9/2*a2=-1
a2=2/9
y=ax+b
y=2/9x+b
-1=-3*2/9+b
b=-1+2/3=-1/3
y=2/9x-1/3
b]
3x-5y-1=0
5y=3x-1 /;5
y=3/5x-1/5
a1=3/5
3/5*a2=-1
a2=-5/3
y=-5/3x+b
-1=-5/3*(-3)+b
b=-1-5=-6
y=-5/3x-6