How to determine whether two lines in space are parallel or perpendicular.
How to write the vector equation of a line.
How to find the polar equation of a line through the origin (or pole).
How to write the parametric equations of a line segment that goes from point A to point B.
How to prove two triangles are similar using a line parallel to a base.
How to write equations describing motion in a straight line given the velocity and the position when t=0.
How to describe and label point, line, and plane. How to define coplanar and collinear.
How to write the equation of a graphed line.
Equations and slopes of horizontal and vertical lines
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.
How to graph a line using the x and y intercepts.
How to determine whether lines are parallel, perpendicular, or neither.
How to duplicate a line segment using a compass and straightedge.
Overview of correlation, scatterplots, and line of best fit
How to graph a line.
How to construct parallel lines using three different methods.
How to find the slope of a line if given a graph.
How to use the slope-intercept form of a line.
How to graph a line by making a table of values.