Lesson 9: Equivalent Equations and Functions
About this lesson
In this lesson, students find solutions to quadratic equations and recognize the solutions as \(x\)-intercepts of related functions then match equivalent equations. In the associated Algebra 1 lesson, students solve equations in factored form. Practicing finding equivalent equations and their solutions, gives students additional support before working with the Algebra 1 lesson. Explaining why equations are equivalent requires students to construct viable arguments and critique the reasoning of others (MP3).
Lesson overview
- 9.1 Warm-up: More Equivalent Equations (5 minutes)
- 9.2 Activity: Finding Solutions and Functions (20 minutes)
- 9.3 Activity: Card Sort: Matching Equations (15 minutes)
Learning goals:
- Recognize solutions to quadratic equations as \(x\)-intercepts.
Learning goals (student facing):
- Let’s explore equivalent equations.
Required materials
- Pre-printed slips, cut from copies of the blackline master
Standards:
- This lesson builds towards the standards:CCSS.HSA-REI.B.4.bMS.A-REI.4bMO.A1.REI.A.2c
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