Respostas

2013-10-02T20:28:55-03:00
A=(5,3) B=(-3,-5)

f(5) = A x 5 + B = 3
f(-3) = A x (-3) + B = -5

 5A + B = 3                             
-3A + B = -5

-3A + B = -5
B = 3A - 5

5A + 3A - 5 = 3
8A = 5 + 3
A = 8/8
A = 1

B = 3 x 1 - 5
B = -15

F(X) = 1X - 15
1 5 1