If f(x)=ax+b/x and f(1)=1 and f(2)=5, what is the value of A and B?

Step-by-step explanation:

Putting x = 1

=>

Given that f(1) = 1

=>

=>  -------------------(1)

Now,

Putting x = 2

=>

Given that f(2) = 5

=>

=>

=>  ----------------(2)

Subtracting (2) from (1)

For b , Put a = 9 in equation (1)

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8