Use the Substitution Method to Solve the System $$\begin{array} { l } 9 x + y = 7 \\- 9 x + 5 y = - 1\end{array}$$

question 86

Multiple Choice

Use the substitution method to solve the system.
- $$\begin{array} { l } 9 x + y = 7 \\- 9 x + 5 y = - 1\end{array}$$

• A) \(\left( \frac { 5 } { 3 } , - 8 \right)\)
• B) \(( 1 , - 5 )\)
• C) \(\left[ \frac { 2 } { 3 } , 1 \right]\)
• D) \(\left( 5 , \frac { 4 } { 5 } \right)\)

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Definitions:

Non-Coding DNA

DNA sequences that do not code for proteins but have regulatory and other functions, making up a large portion of the genome in many organisms.

Non-Coding Portions

Segments of DNA or RNA that do not code for proteins but have roles in gene expression and regulation.

Human DNA

The complex molecule that carries genetic information crucial for the growth, development, functioning, and reproduction of humans.