Solve the System of Linear Equations $$\left\{ \begin{array} { l l } - 2 x + 3 y - 4 z & = - 19 \\4 x - y - z & = 22 \\4 x + y - z & = 12\end{array} \right.$$

question 39

Multiple Choice

Solve the system of linear equations.? $$\left\{ \begin{array} { l l } - 2 x + 3 y - 4 z & = - 19 \\4 x - y - z & = 22 \\4 x + y - z & = 12\end{array} \right.$$

• A)? \(( 1 , - 4 , - 4 )\)
• B)? \(( 4 , - 5 , - 1 )\)
• C)? \(( - 5 , - 1,4 )\)
• D)inconsistent
• E)? \(( - 4,1 , - 4 )\)

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Definitions:

Yield

The earnings generated and realized on an investment over a particular period, expressed as a percentage of the investment’s cost, its current market value, or its face value.

Modified Duration

A measure of the sensitivity of a bond's price to changes in interest rates, adjusting for the bond's yield to maturity.

Modified Duration

A measure that estimates the price sensitivity of a bond or bond portfolio to interest rate changes, adjusting for the changing yield to maturity.

Convexity

A measure of the curvature or the rate of change of the bond's duration as interest rates change, affecting the bond's price sensitivity to interest rate changes.