Solve the Nonlinear System of Equations $$\left\{ \begin{aligned}x ^ { 2 } + y ^ { 2 } & = 81 \\y & = \frac { 1 } { 9 } x ^ { 2 } - 9\end{aligned} \right.$$

question 122

Multiple Choice

Solve the nonlinear system of equations.
- $$\left\{ \begin{aligned}x ^ { 2 } + y ^ { 2 } & = 81 \\y & = \frac { 1 } { 9 } x ^ { 2 } - 9\end{aligned} \right.$$

• A) \(( - 9,0 ) , ( 0,9 ) , ( 0 , - 9 )\)
• B) \(( - 9,0 ) , ( 9,0 ) , ( 0 , - 9 )\)
• C) \(( - 9,0 ) , ( 9,0 )\)
• D) \(( - 9,0 ) , ( 9,0 ) , ( 0,9 )\)

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Definitions:

Calcium-Binding Protein

A type of protein that can bind calcium ions, playing crucial roles in cellular processes and signaling.

Phospholipase

An enzyme that hydrolyzes phospholipids into fatty acids and other lipophilic substances, playing key roles in cellular membranes' metabolism and signaling.

First Messenger

A signaling molecule that binds to a receptor at the surface of a cell, initiating a series of intracellular events that lead to a biological response.

Acetylcholine

A neurotransmitter in both the peripheral and central nervous system that is involved in muscle activation, heart rate, and memory function.