The point which lies on the perpendicular bisector of the line segment joining the points A(-2, -5) and B(2, 5) is

1. (0, 0)

2. (0, 2)

3. (2, 0)

4. (-2, 0)

If the end points of a diameter of a circle are A(-2, 3) and B(4, -5) then the coordinates of its centre are

1. (2, -2)

2. (1, -1)

3. (-1, 1)

4. (-2, 2)

If the mid-point of the line segment joining the points P(a, b - 2) and Q(-2, 4) is R(2, -3), then the values of a and b are

1. a = 4, b = -5

2. a = 6, b = 8

3. a = 6, b = -8

4. a = -6, b = 8