. (a) The centre 0, of a circle has the coordinates (4, 5) and one point on the circumference is
(8, 10). Find the co-ordinates of the other end
of the diameter of the circle through this point.
(b) Find the equation of a line, which has the
y-intercept 4 and is parallel to the line
2x - 3y =7. Find the coordinates of the point,
where it cuts the x-axis.
(ICSE 1998)