Odpowiedzi

2009-06-02T17:53:13+02:00
P (2, -1)
x=2 y=-1

-1 = a * 2 + 5/2
-1 = 2a + 5/2
-2a = 2,5 +1
-2a - 3,5 |: (-2)
a = -1,75