Question 19
If sum of the perpendicular distances of a variable point P ( x, y) from the lines x + y - 5 = 0 and 3x - 2y +7 = 0 is always 10. Show that P must move on a line.
SOLUTION
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If sum of the perpendicular distances of a variable point P ( x, y) from the lines x + y - 5 = 0 and 3x - 2y +7 = 0 is always 10. Show that P must move on a line.