Question

f(x)=ax+b, sabe-se que f(-3)=4 e f(1/2)=-10, quis os valoes de a,b.

Answer 1

-3a+b=4
1/2a+b=-10

B=4+3a
1/2a+(4+3a)=-10
7/2a=-14
A=-4
B=4+3.-4
B=-8

Answer 2

     -3a + b = 4(-1)
   1/2a + b = - 10

     3a - b = - 4
   1/2a + b = - 10

    3a + 1a = - 14   mmc = 2
           2
      6a + a = - 28
        7a = -28

       a = - 4


        - 3a + b = 4 ==> b =3(-4) + 4==> b = -12+ 4 ==> b = - 8

   f(x) = - 4x - 8