I find some answer in internet but was incomplete

Illustrate graphically, and explain clearly the two types of risk in a portfolio Which relevant and why? Illustrate graphically, and clearly explain the Security Market Line (SML), and the risk premiums of 1) a market portfolio with a return of 10 percent, and 2) a security with a beta coefficient of 1.5 and an expected return of 15 percent. Assume the risk-free rate is 5 percent. Illustrate graphically and clearly explain the concept of Acme Company's Characteristic line. What does the Characteristic Line show? Who originated it and why