Identify the Center and Radius of the Circle $x ^ { 2 } + 18 x + y ^ { 2 } + 16 y + 45 = 0$

question 88

Multiple Choice

Identify the center and radius of the circle $x ^ { 2 } + 18 x + y ^ { 2 } + 16 y + 45 = 0$ .

• A)center: \(( 18,16 )\) radius: 535
• B)center: \(( - 9 , - 8 )\) radius: 45
• C)center: \(( 9,8 )\) radius: 10
• D)center: \(( - 18 , - 16 )\) radius: 45
• E)center: \(( - 9 , - 8 )\) radius: 10

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Definitions:

Anxiety

A feeling of worry, nervousness, or unease, often about an imminent event or something with an uncertain outcome.

Stimulus Generalization

is the process in which a response is elicited by stimuli that are similar but not identical to the conditioned stimulus in a conditioning paradigm, demonstrating the ability to generalize learning to new stimuli.

Conditioned Response

A learned reaction to a previously neutral stimulus that has become associated with an unconditioned stimulus.

Original CS

In classical conditioning, the original conditioned stimulus that is neutral at first but becomes associated with an unconditioned stimulus to elicit a conditioned response.