Odpowiedź:
y=ax+b
A=(2;-4) B=(0;-2)
{-4=2a+b
-2=a•0+b
{ 2a+b=-4
-2=b
{ 2a-2=-4
b=-2
{ 2a=-2 /:2
{ a=-1
y=-x-2
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Odpowiedź:
y=ax+b
A=(2;-4) B=(0;-2)
{-4=2a+b
-2=a•0+b
{ 2a+b=-4
-2=b
{ 2a-2=-4
b=-2
{ 2a=-2 /:2
b=-2
{ a=-1
b=-2
y=-x-2