Solve the Problem $$\left\{ \begin{array} { l } \frac { 1 } { 2 } x + \frac { 1 } { 2 } y = - 1 \\x - y = 4\end{array} \right.$$

question 39

Multiple Choice

Solve the problem.
- $$\left\{ \begin{array} { l } \frac { 1 } { 2 } x + \frac { 1 } { 2 } y = - 1 \\x - y = 4\end{array} \right.$$

• A) \(\{ ( 0 , - 2 ) \}\)
• B) no solution; \(\varnothing\)
• C) \(\{ ( 1 , - 3 ) \}\)
• D) \(\{ ( - 1 , - 2 ) \}\)

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Definitions:

Enantiomers

Molecules that are mirror images of each other but cannot be superimposed, possessing identical physical properties except for their effect on polarized light.

Amines

Organic compounds and functional groups that contain a basic nitrogen atom with a lone pair, derived from ammonia by replacement of one or more hydrogen atoms with organic groups.

Trimethylamine

A nitrogen-containing organic compound characterized by a strong fishy odor, used in the synthesis of various chemical products.

3-Pentanamine

A chemical compound characterized by a five-carbon chain with an amine group attached to the third carbon.