The last couple of years have seen a huge rise in browser-based puzzle games, tasking players with working out a certain kind of answer using limited guesses. Framed is one of the newest, following in ...

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.