The security market line (SML) can best be defined as: 25 Multiple Choice & 01:56:37 Equation of the SML showing the relationship between expected return and beta. Positively sloped straight line displaying the relationship between expected return and beta. O The amount of systematic risk present in a particular risky asset relative to an average risky asset. Slope of the SML, the difference between the expected return on a market portfolio and the risk-free rate, O Principle stating that the expected return on a risky asset depends only on that asset's systematic risk