Show that the lines are 3x+2y+9=0 and 12x+8y-15=0 are parallel lines.

Show that lines x-2y-7=0 and 2x-4y+15=0 are parallel to each other.

Show that the straight line x-2y+3=0 and 6x+3y+8=0 are perpendicular .

Find the equation of the straight line passing through the point of intersection of the straight lines x+2y+3=0 and 3x+4y+7=0 and parallel to the straight line y=-(5)/(8)x .

Show that the lines 3x-4y+5=0,7x-8y+5=0 and 4x+5y=45 are concurrent.

Find the equation of the straight line passing through the point of intersection of the two line x+2y+3=0 and 3x+4y+7=0 and parallel to the straight line y-x=8

Find the distance between the parallel lines 3x-4y+9=0 and 6x-8y-15=0 .

Show that the lines 2x + 3y - 8 = 0 , x - 5y + 9 = 0 and 3x + 4y - 11 = 0 are concurrent.

Show that the lines 2x + 3y - 8 = 0 , x - 5y + 9 = 0 and 3x + 4y - 11 = 0 are concurrent.