Find an equation of the line that is perpendicular to \displaystyle 10x+5y=9\displaystyle {10}{x}+{5}{y}={9}\displaystyle and has a y-intercept of 5\displaystyle -{5}. Write your answer in the form y=mx+b\displaystyle {y}={m}{x}+{b}.

y=\displaystyle {y}= x+\displaystyle {x}+