A line passes through the points A(4, -6) and B(-2,-5). Show that the line AB makes an obtuse angle with the x-axis.

Consider the line passing through the points (3,4) and (x,5) if the line makes an angle of 135^@ with positive direction of x-axis, find the value of x.

Slope of the line passing through the points ( 4 , 6) and ( 2 , - 5) is

Prove that line passes from the points A( 4, -6) and B(-2, -5) makes obtuse angle with X- axis.

A line passes through the points A(2,-3) and B(6,3) , find the slope of the line which is parallel to AB :

Find the equation of the lines passing through the point (1,1) and the perpendicular from the origin makes an angle 60^(@) with x-axis.

If a line passes through the mid point of AB where A is (3,0) and B is (5,4) and makes an angle 60^@ with x-axis find its equation.