Lesson Plan

Determine whether a given ordered pair is a solution of a system by substituting into both equations

Solve a system of two linear equations by substitution, choosing the variable to isolate from the coefficients

Solve a system of two linear equations by elimination, including cases where both equations must be scaled

Solve a system of two linear equations by graphing, and explain why the point of intersection is the solution

Select the most efficient method for a given system by reading its form

Translate a two-quantity word problem into a system of two linear equations and solve it

A 604. Solve systems of two linear equations A 403. Solve routine first-degree equations A 601. Manipulate expressions and equations AF 503. Match linear equations with their graphs in the coordinate plane AF 602. Build functions and write expressions, equations, and inequalities for common algebra settings (e.g., distance to a point on a curve and profit for variable cost and demand)