Straight Line a...

The lines 15x – 18y + 1 = 0, 12x + 10y – 3 = 0 and 6x + 66y – 11 = 0 are

If the lines ax + 2y + 1 = 0, bx + 3y + 1 = 0 and cx + 4y + 1 = 0 are concurrent, then a,b,c are in

The lines 2x + y – 1 = 0, ax + 3y – 3 = 0 and 3x + 2y – 2 = 0 are concurrent for

If lines 4x + 3y = 1 ,y = x + 5 and 5y + bx = 3 are concurrent, then b equals

The three straight lines ax + by = c, bx + cy = a and cx + ay = b are collinear, if

The three lines lx + my + n = 0, mx + ny + l = 0, nx + ly + m = 0 are concurrent if

The straight lines 4ax + 3by + c = 0 where a + b + c = 0, will be concurrent, if point is

One vertex of the equilateral triangle with centroid at the origin and one side as x + y – 2 = 0 is

The coordinates of the foot of the perpendicular from (0,0) upon the line x + y = 2 are

The reflection of the point (4, –13) in the line 5x + y + 6 = 0 is