Question

K= -6 f(k)= k/2+1 i know the answer is -2 but i don’t know how to solve it.

Answer 1

The answer should be -2

Answer 2

f(k)= k/2+1

Use the substitution method

f(-6)= -6/2+1

Cross out -6 and 2 , divide by 2

-6/2= -3

2/2= 1

-6/2=-3/1=-3

f(-6)= -3+1

Answer: f(-6)= -2