Simultaneous equations like 𝒚 = 2𝒙 - 1 and 𝒚 = 𝒙 + 1 can be represented graphically. To solve the equations graphically, the two lines 𝒚 = 𝒙 + 1 and 𝒚 = 2𝒙 - 1 are drawn on the same diagram.

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

A new technique for solving 'graph Laplacians' is drastically simpler than its predecessors, with implications for a huge range of practical problems. In the last decade, theoretical computer science ...

The 2026 Digital SAT Math section is adaptive, calculator-friendly, and heavily weighted toward algebra and advanced math. Success depends on mastering high-value domains, using tools like Desmos ...