Solve the Pair of Linear Equations by Addition $\begin{array} { l } 9 x + 6 y = 0 \\6 x - 3 y = 63\end{array}$

question 28

Multiple Choice

Solve the pair of linear equations by addition. $\begin{array} { l } 9 x + 6 y = 0 \\6 x - 3 y = 63\end{array}$ If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

• A) \(( 6 , - 7 )\)
• B) \(( 6 , - 9 )\)
• C) \(( 5,9 )\)
• D) The lines are parallel.
• E) The lines coincide.

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Definitions:

Compounded Semiannually

Interest calculation method where interest is added to the principal sum of a deposit or loan twice a year, resulting in interest earning interest.

Compounded Annually

A method of calculating interest where the interest earned each year is added to the principal, leading to an increase in the amount of interest earned in subsequent years.

Present Value

The current worth of a future sum of money or stream of cash flows given a specified rate of return, used in discounting and investment appraisal.

Annuity

A fiscal tool that disburses a set sequence of payments to a person, frequently serving as a financial income for retirees.