Stocks A $($E$($RA$)=10\%$ BetaA $=1\mathrm{.}35)$ and B $($E$($RB$)=13\mathrm{.}5\%$ BetaB $=1\mathrm{.}95)$ are correctly valued according to the CAPM model $($at equilibrium$).$

a$)$ Find the parameters of the equilibrium line.

b$)$ If stock C $($Betac $=0\mathrm{.}75)$ is correctly valued, what should its return be$?$

Show your work.