1.   Find the equation of a circle that has a diameter of 8 units, centered at C(-3, -7).
    A. (x - 3)2 + (y - 7)2 = 16 B. (x + 3)2 + (y + 7)2 = 16
    C. (x - 3)2 + (y - 7)2 = 8 D. (x + 3)2 + (y + 7)2 = 64
    Hint

  2.   Write the equation of a circle with center (-2, 4) and radius of 6 units.
    A. (x + 2)2 + (y - 4)2 = 36
    B. (x - 2)2 + (y - 4)2 = 36
    C. (x + 2)2 - (y + 4)2 = 36
    D. (x + 2)2 - (y - 4)2 = 36
    Hint

  3.   What are the coordinates of the center of a circle defined by the equation
(x + 7)2 + (y - 8)2 = 16?
    A. (7, -8) B. (7, 8)
    C. (-7, 8) D. (-7, -8)
    Hint

  4.   Find the diameter of a circle defined by the equation
(x + 4) 2 + (y - 16) 2 = 192. Express in simplest form.
    A. 96 B.
    C. D.
    Hint

  5.   Which graph is the correct graph for a circle defined by the equation
(x + 3)2 + (y - 4)2 = 9?
    A. B.
    C. D.
    Hint



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