Use the Gauss-Jordan Method to Solve the System of Equations $\begin{array} { l } 2 x + 5 y = - 7 \\- 6 x - 15 y = 21\end{array}$

question 454

Multiple Choice

Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, give the
solution with y arbitrary.
$\begin{array} { l } 2 x + 5 y = - 7 \\- 6 x - 15 y = 21\end{array}$

• A) \(\{ ( - 1 , - 1 ) \}\)
• B) \(\phi\)
• C) \(\left\{ \left( - \frac { 5 } { 2 } y - \frac { 7 } { 2 } , y \right\} \right\}\)
• D) \(\left\{ \left( - \frac { 5 } { 2 } y + \frac { 7 } { 2 } , y \right) \right\}\)

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Definitions:

Collaborative Forecasting

A process where multiple stakeholders, often from different levels of the supply chain, work together to predict future demand or trends.

Forecast Error

The difference between the actual outcome and the predicted outcome, often used in the context of demand forecasting in supply chain and finance.

Managerial Decisions

Decisions made by managers that influence the direction and performance of a business or organization.

Supply Of Raw Materials

The provision and delivery of the basic materials required by companies to manufacture their products.