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f(x)=12x-2,3 wzgledem punktu (0,0)
f(x)=12x-2,3 punkty prostej to np.:
A=(0;-2,3)
12x-2,3=0
12x=2,3 /:12
x=2,3/12
x=23/120
B=(1;9,7)
A'=(0;2,3)
B'=(-1;-9,7)
y=ax+b
b=2,3
-9,7=-a+2,3
a=2,3+9,7
a=12
y=12x+2,3