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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