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A circle in the 
xy-plane has the equation 
(x-4)^(2)+(y+1)^(2)=16. Which of the following points does NOT lie inside the circle?
Choose 1 answer:
(A) 
(7,-3)
(B) 
(4,-1)
(c) 
(2,2)
(D) 
(0,0)

A circle in the xy x y -plane has the equation\newline(x4)2+(y+1)2=16 (x-4)^{2}+(y+1)^{2}=16 . Which of the following points does NOT lie inside the circle?\newlineChoose 11 answer:\newline(A) (7,3) (7,-3) \newline(B) (4,1) (4,-1) \newline(C) (2,2) (2,2) \newline(D) (0,0) (0,0)

Full solution

Q. A circle in the xy x y -plane has the equation\newline(x4)2+(y+1)2=16 (x-4)^{2}+(y+1)^{2}=16 . Which of the following points does NOT lie inside the circle?\newlineChoose 11 answer:\newline(A) (7,3) (7,-3) \newline(B) (4,1) (4,-1) \newline(C) (2,2) (2,2) \newline(D) (0,0) (0,0)
  1. Equation of the Circle: The equation of the circle is given by (x4)2+(y+1)2=16(x-4)^{2}+(y+1)^{2}=16. The center of the circle is at (4,1)(4, -1) and the radius is the square root of 1616, which is 44. To determine if a point lies inside the circle, we can plug the coordinates of the point into the circle's equation and see if the resulting value is less than 1616. If it is, the point lies inside the circle; if it is equal to 1616, the point lies on the circle; and if it is greater than 1616, the point lies outside the circle.
  2. Checking Point (A): Let's check point (A) (7,3)(7, -3). \newlineSubstitute x=7x = 7 and y=3y = -3 into the circle's equation: \newline(74)2+(3+1)2=(3)2+(2)2=9+4=13(7-4)^{2}+(-3+1)^{2} = (3)^{2}+(-2)^{2} = 9 + 4 = 13 \newlineSince 1313 is less than 1616, point (A) lies inside the circle.
  3. Checking Point (B): Now, let's check point (B) (4,1)(4, -1). \newlineSubstitute x=4x = 4 and y=1y = -1 into the circle's equation: \newline(44)2+(1+1)2=(0)2+(0)2=0+0=0(4-4)^{2}+(-1+1)^{2} = (0)^{2}+(0)^{2} = 0 + 0 = 0 \newlineSince 00 is less than 1616, point (B) lies inside the circle.
  4. Checking Point (C): Next, let's check point (C) (2,2)(2, 2). \newlineSubstitute x=2x = 2 and y=2y = 2 into the circle's equation: \newline(24)2+(2+1)2=(2)2+(3)2=4+9=13(2-4)^{2}+(2+1)^{2} = (-2)^{2}+(3)^{2} = 4 + 9 = 13 \newlineSince 1313 is less than 1616, point (C) lies inside the circle.
  5. Checking Point (D): Finally, let's check point (D) (0,0)(0, 0). \newlineSubstitute x=0x = 0 and y=0y = 0 into the circle's equation: \newline(04)2+(0+1)2=(4)2+(1)2=16+1=17(0-4)^{2}+(0+1)^{2} = (-4)^{2}+(1)^{2} = 16 + 1 = 17 \newlineSince 1717 is greater than 1616, point (D) does NOT lie inside the circle.
  6. Final Answer: Therefore, point (0,0)(0, 0) does NOT lie inside the circle.

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