This section reviews writing and solving systems of equations. We reviewed solving systems of equations by graphing; students should be able to perform this task for the test and be capable of interpreting the solution in the context of the original problem.
Many of the word problems in the workbook contain values that would make solving them by hand extremely difficult, if not impossible. For this reason, students were introduced to the DESMOS graphing calculator (available on tablets, laptops, or as a free app for iPhone or Android). I have allowed students to solve all of the systems of equations in the word problem questions with the graphing app so they can focus on the actual setup of the equations. However, it is imperative that students are still able to solve systems of equations when graphing by hand — the questions on the test will be similar to questions #1-4 on the 3-6 practice pages.
Many of the word problems in the workbook contain values that would make solving them by hand extremely difficult, if not impossible. For this reason, students were introduced to the DESMOS graphing calculator (available on tablets, laptops, or as a free app for iPhone or Android). I have allowed students to solve all of the systems of equations in the word problem questions with the graphing app so they can focus on the actual setup of the equations. However, it is imperative that students are still able to solve systems of equations when graphing by hand — the questions on the test will be similar to questions #1-4 on the 3-6 practice pages.