If the angle between two lines is `pi/4`and slope of one of the lines is `1/2`, find the slope of the other line.

Angle between two lines is 45° and slope of one line is 2 then find slope of second line.

Calculate slope of shown line

The slope of a line is double of the slope of another line. If tangent of the angle between them is (1)/(3) , find the slopes of the lines.

Two lines passing through the point (2,3) intersects each other at an angle of 60°. If slope of one line is 2, find equation of the other line.

Find the equation of the line through (-2,3) with slope -4 .

Find the equation of the line through (-2, 3) with slope -4 .

The end points of a line segment are (2, 3), (4, 5). Find the slope of the line segment.

Find the angle between the X-axis and the line joining the points (3,-1) and (4,-2) .