Odpowiedź :
Czołem!
A = (-2, 11) i B = (3, -9)
{-2a + b = 11
{3a + b = -9 | * (-1)
{-2a + b = 11
+ {-3a - b = 9
--------------------
-5a = 20 | : (-5)
a = -4
-2 * (-4) + b = 11
8 + b = 11
b = 3
y = -4x + 3
Czołem!
A = (-2, 11) i B = (3, -9)
{-2a + b = 11
{3a + b = -9 | * (-1)
{-2a + b = 11
+ {-3a - b = 9
--------------------
-5a = 20 | : (-5)
a = -4
-2 * (-4) + b = 11
8 + b = 11
b = 3
y = -4x + 3