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.
Department of Astronomy, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia. Department of Astronomy, National Research Institute of Astronomy and Geophysics, Cairo, Egypt. Department ...