https://www.khanacademy.org/math/algebra-1-tx-teks-imra-2026-publisher-initiated-changes/x77e86bfa312010ae:systems-of-linear-equations-and-inequalities 2026-07-22T12:21:28.248165541Z Systems of linear equations and inequalities If one line is useful, let's see what we can do with two lines. In this unit, we learn how to write systems of equations, solve those systems, and interpret what those solutions mean in a real-world contexts. **Unit guides are here!** Power up your classroom with engaging strategies, tools, and activities from Khan Academy’s learning experts. [**PDF**](https://bit.ly/4cW6JUN) unit