3.2.7 Lines On a Plane
Condition: Given the equations of parallel lines \ (4 X-7 Y-65 = 0 \) and \ (4 X-7 Y-87 = 0 \). Find the distance between the lines and the equation of the straight line, symmetric first line relative to the second.
Equation of A Straight Line on a Plane. Finding the Equations of Heights, Bisectors and Medians of a Triangle, The Intersection of Lines.