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.

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‡ Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway § SINTEF Materials and Chemistry, N-7465 Trondheim, Norway Article Views are the COUNTER-compliant ...