Solve the System of Equations by Substitution, If a Solution $$\left\{ \begin{array} { l } x + 9 y = 49 \\- 6 x + 8 y = 16\end{array} \right.$$

question 80

Multiple Choice

Solve the system of equations by substitution, if a solution exists.
- $$\left\{ \begin{array} { l } x + 9 y = 49 \\- 6 x + 8 y = 16\end{array} \right.$$

• A) \(x = 3 , y = 6\)
• B) \(x = - 4 , y = 6\)
• C) No solution
• D) \(x = 4 , y = 5\)

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Definitions:

Phosphate Group

A chemical group consisting of a phosphorus atom bonded to four oxygen atoms, crucial for energy transfer in biological organisms.

Magnesium

A lightweight, silvery-white alkaline earth metal, crucial for various biological processes.

Enzymatic Activity

Refers to the catalytic action performed by enzymes, speeding up biochemical reactions within organisms without being consumed in the process.