What is the equation of the straight line which is perpendicular to y = x and passes through (3, 2) ?

The straight lines x + y $$-$$ 4 = 0, 3x + y $$-$$ 4 = 0 and x + 3y $$-$$ 4 = 0 form a triangle, which is

For different values of m, the equation 4y=mx-m+ 2 represents

The equation of the locus of a point equidistant from the points (a, b) and (c, d) is (a - c)  x + (b - d)  y + k = 0 What is the value of k?