Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations.
Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.
In the Systems of Equations Circuit students work 5 problems posted around the room, creating a loop. The systems of equations are best solved by substitution.
There are 15 problems total. The Circuit is differentiation in 3 levels, easy in which both equations are solved for y, medium in which one equation is solved for y, and challenging where no equation is solved for a variable.
Work is self-checking. Solutions are included.