Suppose that the points , , and form a right triangle at . What is the value of ?
Given that the coordinates of the points , , , and are , , , and , respectively, determine whether and are parallel, perpendicular, or neither.
Determine, in slope-intercept form, the equation of the line passing through perpendicular to the line passing through and .
Write, in the form , the equation of the line that is parallel to the line and that intercepts the -axis at 1.
If and , find the cartesian equation of the straight line passing through the point of division of internally in the ratio and perpendicular to the straight line whose equation is .
If the gradient of the straight line equals , find the value of .
Find the gradient of the line and the -intercept of this line.
Lines and are perpendicular to each other and meet at . If the slope of is 0, what is the equation of line ?
Determine whether the lines and are parallel, perpendicular, or neither.
Given that the points and lie on a line that has a slope of 1, determine the value of .
If a line is perpendicular to the line , and passes through the points and , what is the value of ?
Suppose that is the line , and the line . Find the value of so that .