When travelling on a road, you are either going to travel parallel to another road or you will eventually cross it. Lines are very much the same. Two lines on the Cartesian plane are either parallel or intersecting. If lines are intersecting, we want to find where they cross or their point of intersection.
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Learn about parallel lines and their properties. How are the slopes of parallel lines related? Practice finding the equations of parallel lines.
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Learn what the slope intercept form of a line in the Cartesian plane is. Practicing finding the equation of lines in the plane.
Learn about the symmetric equation of a line and to rewrite the equation of a line into this form.