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A=(-1;-2) B=(1;4)
podkreślamy i dodajemy
2b=2/:2
b=1
a+1=4
a=3
f(x)=ax+b
f(x)=3x+1
b)
A=(-2;0) B=(6;4)
podkreślamy i dodajemy
4b=4/:4
b=1
6a+1=4
6a=3/:6
a=
f(x)=ax+b
f(x)=