Algebra I

The easiest way to solve a system of equations is with graphing. To find out where equations are equal, simply look to see where they are crossing on the graph. The only downside is that sometimes it's hard to get an exact answer.

So why are there other techniques if this is so quick and easy? It's because in real life the answer might be a decimal, or the answer might be such a large number we can't find it on a graph.