1.   Write the general form of the equation of the circle that passes through the points at (4, 2), (–3, 1), and (–2, –6).
    A. x2 + y2 + 2x – 4y – 20 = 0
    B. x2 + y2 + 2x + 4y – 20 = 0
    C. x2 + y2 – 2x – 4y + 20 = 0
    D. x2 + y2 – 2x + 4y – 20 = 0
    Hint

  2.   Write the equation of a circle that passes through the origin and has its center at (–3, –2).
    A. (x + 3)2 + (y + 2)2 = 13
    B. (x + 3)2 + (y + 2)2 = 5
    C. (x – 3)2 + (y + 2)2 = 10
    D. (x – 3)2 + (y – 2)2 = 13
    Hint

  3.   Write the equation of a circle that passes through points (1, 2), (-1, 4) and (-3, 2) in standard form.
    A. (x - 1) 2 + (y - 2) 2 = 4
    B. (x - 1) 2 + (y + 3) 2 = 4
    C. (x + 1)2 + (y - 2) 2 = 4
    D. (x + 1) 2 + (y - 3) 2 = 4
    Hint

  4.   Write the equation of a circle that has a diameter with endpoints at (1, 0) and (5, 4).
    A. (x + 3) 2 + (y + 2) 2 = 8
    B. (x + 3) 2 + (y - 2) 2 = 64
    C. (x - 3) 2 + (y - 2) 2 = 64
    D. (x - 3) 2 + (y - 2) 2 = 8
    Hint

  5.   The equation of a circle is (x - 8) 2 + (y + 3)2 = 48, find the center and the radius.
    A. (-8, 3); B. (-8, -3);
    C. (8, -3); D. (8, 3);
    Hint



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