Find the Center and Radius of the Circle $x ^ { 2 } + y ^ { 2 } + 18 x + 4 y + 85 = 36$

question 127

Multiple Choice

Find the center and radius of the circle.
- $x ^ { 2 } + y ^ { 2 } + 18 x + 4 y + 85 = 36$

• A) \(( 9,2 ) , r = 36\)
• B) \(( - 9 , - 2 ) , \mathrm { r } = 6\)
• C) \(( 2,9 ) , r = 36\)
• D) \(( - 2 , - 9 ) , r = 6\)

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Definitions:

Internal Carotid Arteries

Major arteries located on either side of the neck that supply blood to the brain, eyes, and parts of the face and scalp.

Vertebral Arteries

Pair of arteries that arise from the subclavian arteries and ascend in the neck to supply blood to the brain and spinal cord.

Supply Blood

The process of providing nutrients and oxygen to tissues through the circulatory system.

Limbic System

The limbic system is a complex system of nerves and networks in the brain, involved in emotions such as fear and pleasure.