Questions in st-line

Select	Question
	The equation of the line whose slope is 3 and which cuts off an intercept 3 from the positive x – axis is
	If the coordinates of the points A, B, C, D, be $(a,\ b),$ $({a}',\ {b}'),$ $(-a,\ b)$ and $({a}',\ -{b}')$ respectively, then the equation of the line bisecting the line segments AB and CD is
	The equation of the straight line passing through the point (3, 2) and perpendicular to the line y = x is
	If the coordinates of A and B be (1, 1) and (5, 7), then the equation of the perpendicular bisector of the line segment AB is
	If the coordinates of the points A, B, C be (– 1, 5), (0, 0) and (2, 2) respectively and D be the middle point of BC, then the equation of the perpendicular drawn from B to the line AD is
	The equation of the line passing through the point $({x}',\ {y}')$ and perpendicular to the line $y{y}'=2a\,(x+{x}')$ is
	If the middle points of the sides BC, CA and AB of the triangle ABC be (1, 3), (5, 7) and (– 5, 7), then the equation of the side AB is
	If the coordinates of the vertices of the triangle ABC be (– 1, 6), (– 3, – 9), and (5, – 8) respectively, then the equation of the median through C is
	The equation of the line perpendicular to the line $\frac{x}{a}-\frac{y}{b}=1$ and passing through the point at which it cuts x–axis, is
	The equation of the line passing through the point (1, 2) and perpendicular to the line $x+y+1=0$ is