1. Find the equations of the sides of a triangle through B(-4;-5) and the equations of two of its heights h2: 5x + 3y - 4 = 0 and h2: 3x + 8y + 13 = 0.
2. a) Write down the equation of a straight line which passes through the point M(2;-1) and is perpendicular to the line 3x + 2y - 5 = 0; b) define the distance between the point M and the line 6x - 8y - 1 = 0; c) write down the equation of straight line which passes through point N which is middle of the section PQ where P(5;2) and Q(1;-8 ) and through the intersecting point of the lines 2x - 3y = 0 and x - 2y + 1 = 0.

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