can you prove those 3 coordinates?
I am having a bit of trouble with this new module we started on analytical geometry. I am supposed to find the equation of the altitude drawn from a vertex, but nowhere in the book does it explain what altitude is. The information I am given is 3 x y coordinates on a Cartesian graph. Could anyone explain what they are looking for?
I'm going to assume that they want the altitude of the triangle ABC.
An altitude of a triangle is defined to be a line through a vertex and perpendicular to a line containing the base (the opposite side of the triangle).
In this example, they are looking for the equation of the line that passes through A and is perpendicular to BC (as a line, not a line segment)