Unit 5, Lesson 26
Using Linear Relations to Solve Problems
Accelerated 7
Preparation
Lesson Narrative
In this culminating lesson for the unit, students interpret representations of linear relationships in real-world contexts (MP2). They study graphs that represent linear situations, encountering lines with positive, negative, and zero slopes graphed on the same set of axes for the first time. Students work with equations written in both and formats, identifying situations when one form of equation may provide more contextual information. In this activity, students solidify what it means to be a solution to an equation by recalling how to substitute values in an equation or by looking at whether points lie on or off the line.
This lesson is optional. Use this lesson anytime after Lesson 11.
- Describe (orally) limitations of a graphical representation of a situation based on real-world constraints on the quantities.
- Interpret the graph of a linear equation in context, including slope, intercept, and solution, in contexts using multiple representations of non-proportional linear relationships.
Let’s write equations for real-world situations and think about their solutions.
Required Preparation
None