https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:systems-of-equations/x2f8bb11595b61c86:introduction-to-systems-of-equations/v/testing-a-solution-for-a-system-of-equations 2021-06-21T15:29:05Z Testing a solution to a system of equations Sal checks whether (-1,7) is a solution of the system: x+2y=13 and 3x-y=-11. Sal Khan video https://cdn.kastatic.org/googleusercontent/ckn5jlapHG75xl41VkQ-rEF2GRxD5zhraMy6wCs9H1Ufc9_VjKJQZXB3_fqXXWr1XNBBhgFQ5ChWuKPxFMZn-IIurQ Testing a solution to a system of equations Sal checks whether (-1,7) is a solution of the system: x+2y=13 and 3x-y=-11. https://cdn.kastatic.org/ka-youtube-converted/SkMNREAMNvc.mp4/SkMNREAMNvc.mp4 158 Introduction to systems of equations https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:systems-of-equations/x2f8bb11595b61c86:introduction-to-systems-of-equations/v/solving-systems-graphically-examples 2022-10-06T11:39:29.972393653Z Systems of equations with graphing: exact & approximate solutions Sal solves a system of two linear equations in standard form, and then approximates the solution of a system whose solution isn't clearly visible. video https://cdn.kastatic.org/ka_thumbnails_cache/e69bfee3-b4ab-4f54-bad1-e74465d359d8_1280_720_base.png Systems of equations with graphing: exact & approximate solutions Sal solves a system of two linear equations in standard form, and then approximates the solution of a system whose solution isn't clearly visible. https://cdn.kastatic.org/ka-youtube-converted/o4pbAQgJYjI.mp4/o4pbAQgJYjI.mp4 356 Introduction to systems of equations https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:systems-of-equations/x2f8bb11595b61c86:introduction-to-systems-of-equations/v/setting-up-system 2022-09-10T01:04:29.754011735Z Setting up a system of equations from context example (pet weights) Practice writing a system of linear equations that fits the constraints in a word problem. video https://cdn.kastatic.org/googleusercontent/gcuhLa5vqhRku4sOpsnQLoOBqQmzosYMJTQ47rUvw7kb_7xJr_7awWUK-tkewGXcbNXdIiCpZJAxZuj-_OakDRTd Setting up a system of equations from context example (pet weights) Practice writing a system of linear equations that fits the constraints in a word problem. https://cdn.kastatic.org/ka-youtube-converted/HftghcUXaEg.mp4/HftghcUXaEg.mp4 119 Introduction to systems of equations https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:systems-of-equations/x2f8bb11595b61c86:introduction-to-systems-of-equations/v/interpret-points-systems 2022-09-10T01:04:29.754011735Z Interpreting points in context of graphs of systems Given a graph of a system of equations and a context, practice interpreting what various points represent in that system. video https://cdn.kastatic.org/googleusercontent/vYepx-RXgpWMipJPn4kXOehUgDMtGHeJNxeu_D8v-oyghL6e2vt9ymLkwRLFpdB22mFEnI5H9qE8Pl4Su2VYQLIH Interpreting points in context of graphs of systems Given a graph of a system of equations and a context, practice interpreting what various points represent in that system. https://cdn.kastatic.org/ka-youtube-converted/_hW1OzRlx50.mp4/_hW1OzRlx50.mp4 339 Introduction to systems of equations