Solve the System by Using Either the Substitution Method or the Elimination-By-Addition

question 139

Multiple Choice

Solve the system by using either the substitution method or the elimination-by-addition method, whichever seems more appropriate. $\left( \begin{array} { l } x = 3 y + 3 \\x = - 4 y + 5\end{array} \right)$

• A) \(\left( \frac { 31 } { 7 } , \frac { 2 } { 7 } \right)\)
• B) \(\left( \frac { 31 } { 7 } , - \frac { 2 } { 7 } \right)\)
• C) \(\left( \frac { 27 } { 7 } , \frac { 2 } { 7 } \right)\)
• D) \(\left( \frac { 29 } { 7 } , \frac { 2 } { 7 } \right)\)
• E) \(\left( \frac { 27 } { 7 } , - \frac { 2 } { 7 } \right)\)

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Definitions:

Graves Disease

An autoimmune disorder that results in the overproduction of thyroid hormones, causing hyperthyroidism.

Thyroid Hormone

Hormones produced by the thyroid gland, including triiodothyronine (T3) and thyroxine (T4), crucial for regulating metabolism, energy generation, and growth and development.

Aldosterone

A steroid hormone produced by the adrenal cortex that regulates sodium and potassium balance in the blood.

Cortisol

A steroid hormone produced by the adrenal glands, involved in the body's stress response as well as metabolism and immune function.