Points on a Line

Prior to this lesson, students should know that right triangles with a horizontal side, a vertical side, and a long side along the same line are all similar. The height-to-base ratio of these right triangles is called slope. This lesson uses these facts to help determine if points lie on a particular line.

By Desmos Classroom

8th Grade

Math

Learning Goals • Explain whether a point is on a line by finding quotients of horizontal and vertical distances. Materials • Blank paper