3=-2a+b
6=a+b
a=6-b
3=-2(6-b)+b
3=-12+2b+b
3b=15
b=5
a=6-5
a=1
y=x+5 <-- oto to równanie ;]
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3=-2a+b
6=a+b
3=-2a+b
a=6-b
3=-2(6-b)+b
3=-12+2b+b
3b=15
b=5
a=6-5
a=1
y=x+5 <-- oto to równanie ;]
Układ równań
3=a(-2)+b
{
6=a+b → a=6-b
3=-12+3b → 3b=15 → b=5
a=6-5 →a=1
y=x+5
B=(1;6)
y=ax+b
3=-2a+b
6=a+b
3=-2a+b
a=6-b
3=-2(6-b)+b
3=-12+2b+b
3=-12+3b
3b=15
b=5
6=a+b
6=a+5
a=1
y=x+5