\(\boxed{\text{449.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\)
\[\textbf{а)}\ y = x\]
\[\textbf{б)}\ y = x - 1\]
\[\textbf{в)}\ y = \frac{1}{4}x - 1\]
\[\textbf{г)}\ y = \frac{1}{3}x - 3\]