# Inverting amplifier gain and input resistance

For the circuit of the inverting amplifier, design a gain of -10 and an input resistance of $100$k$\Omega$. Give the values of $R_1$ and $R_2$.

Should I calculate the value of $R_1$ and $R_2$ by using $-A_f = - R_f/R_1$ and choose any value for $R_1$? What about the input resistance?