Instructional Activity# What We Mean by an Equation of a Line

Lesson 11. Unit 2. Grade 8 Open Up Resources

Open Up Resources10 min(s)

This Instructional Activity is a part of the Lesson 11, Unit 2, Grade 8. This activity exploits this structure to examine the coordinates of points lying on a particular line. The discussion then produces an equation for the line. In the case where the line goes through (0,0), the equation will be familiar from prior work with proportional relationships but in the next lesson similar triangles will be essential.