Lesson 9

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).

Print and cut 1 copy for every 2 students from the blackline master for the cart sort activity.