This power point can be used for 2 - 4 days.
For Algebra I, I would recommend 4 days, for Algebra II review maybe 2 days.
The first part of the power point is solving systems of equations using substitution. It starts with the steps that can be used and has 5 problems including a no solution and a word problem about truck rentals.
The second part is solving systems using elimination. There are 8 problems including 2 no solutions (one is the same as in substitution), one infitinte solutions, and a word problem from the Looking Glass.
All answers and steps are given.