Conjectures on Parallel and Perpendicular Lines

Author:
C. Nilson
Use the Show Object and Hide Object features to compare the various functions to f(x). Decide which ones are parallel to f(x) and make a conjecture on why they are parallel lines. Now, use the Show and Hide Object Features to find which function is perpendicular to f(x). Come up with a conjecture on why these two functions are perpendicular. Now, test this conjecture to find the last pair of functions that are also perpendicular! (They are not necessarily perpendicular to f(x).)