Make Three Points Collinear
Move point C so that points A, B, and C are colinear. You can drag the axes and zoom in or out. When the points are collinear, a dotted line will appear. For more practice, click the button "New Set of Points". When you have had sufficient practice, answer the question below the graphing window.
Question 1
Describe a way to determine another point that is collinear with points A and B.
Question 2
Are two points always, sometimes, or never collinear?
Question 3
Are three points always, sometimes, or never collinear?