Find the equation for the linear function that passes through the points (3,5)\displaystyle {\left(-{3},-{5}\right)} and (6,1)\displaystyle {\left({6},{1}\right)}. State your equation with whole numbers and/or fractions, not decimals, e.g., f(x)=abx+cd\displaystyle {f{{\left({x}\right)}}}=\frac{{a}}{{b}}\cdot{x}+\frac{{c}}{{d}}.