Question

What do I put in the blank spots?

Answer 1

`f(x)=2x+b \to \ line \ one \\\\\\ \boxed{5}=2* \boxed{(-1)} +b \to line \ two \\\\\\ \boxed{5}=\boxed{-2}+b\to line \ three \\\\\\ \boxed{5+2}=b \to \ line \ four \\\\ \boxed{7}=b`