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Write the Equation in Standard Form (xh)2+(yk)2=r2( x - h ) ^ { 2 } + ( y - k ) ^ { 2 } = r ^ { 2 }

Question 14

Multiple Choice

Write the equation in standard form: (xh) 2+(yk) 2=r2( x - h ) ^ { 2 } + ( y - k ) ^ { 2 } = r ^ { 2 } . Then, if possible, identify the center and radius of the circle. If the equation represents a degenerate case, give the solution set.
- x2+y2+4x+8y+11=0x ^ { 2 } + y ^ { 2 } + 4 x + 8 y + 11 = 0


A) (x+2) 2+(y+4) 2=9( x + 2 ) ^ { 2 } + ( y + 4 ) ^ { 2 } = 9 ; Center: (2,4) ( - 2 , - 4 ) ; Radius: 3
B) (x+2) 2+(y+4) 2=0;( x + 2 ) ^ { 2 } + ( y + 4 ) ^ { 2 } = 0 ; Degenerate case (single point ) :{(2,4) }) : \{ ( - 2 , - 4 ) \}
C) (x+2) 2+(y+4) 2=9( x + 2 ) ^ { 2 } + ( y + 4 ) ^ { 2 } = 9 ; Center: (2,4) ( 2,4 ) ; Radius: 3
D) (x+2) 2+(y+4) 2=9( x + 2 ) ^ { 2 } + ( y + 4 ) ^ { 2 } = - 9 ; Degenerate case: \{ \}

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