Lety=f(x) be the particular solution to the differential equation

Let y = f(x) be the particular solution to the differential equation ") = y? with the initial condition f(3) = 1. Which of the following gives an expression for f(x) and the domain for which the solution is valid? dx Of ( x ) = - 1 for x 4 4 -X Of ( x ) = 4x -1 for x > 0 X Of ( x ) = - 4x - 1 for x # 0 X