Respuesta :

imtiazfaiza2006

Answer:

a=3, b=-12

Step-by-step explanation:

f(x)=ax+b

f(5)=5a+b=3     [eq.1]

f(3)=3a+b=-3   [eq.2]  

[eq.2] - [eq.1]

3a+b-5a-b= -3 -3  

3a-5a=-6

-2a=-6

2a=6

a=3

substituting a=3 in eq.[1]

5a+b=3

5x(3)+b=3

15+b=3

b=3-15

ans: b=-12