Solve the System by Using the Inverse of the Coefficient $$\begin{array} { l } r - 3 s + t = 8 \\- r + 6 s + t = 3 \\3 r - 3 s - t = 6\end{array}$$

question 120

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- $$\begin{array} { l } r - 3 s + t = 8 \\- r + 6 s + t = 3 \\3 r - 3 s - t = 6\end{array}$$

• A) \(\left\{ \left( 4 , \frac { 1 } { 3 } , 5 \right) \right\}\)
• B) \(\left\{ \left( - 5 , \frac { 1 } { 3 } , - 4 \right) \right\}\)
• C) \(\left\{ \left( 5 , \frac { 1 } { 3 } , 4 \right) \right\}\)
• D) \(\left\{ \left( - 4 , \frac { 1 } { 3 } , - 5 \right) \right\}\)

---

Definitions:

Beta

A scale for calculating the instability, or regular risk, of a security or combined investments relative to the market in its entirety.

Systematic Risk

The risk inherent to the entire market or market segment, not reducible through diversification.

Security Market Line

A line on a chart that displays the relationship between risk and the expected return of the market portfolio. It serves as a graphical representation of the Capital Asset Pricing Model (CAPM).

Beta Coefficient

A framework for quantifying the variability, or orderly risk, of a security or investment compilation when juxtaposed with the general market.