Equations of Lines Equations involving one or two variables can be graphed on any x–y coordinate plane. In general, it is true that • if a point lies on the graph of an equation, then its coordinates make the equation a true statement, and • if the coordinates of a point make an equation a true statement, then the point lies on the graph of the equation. The graphs of linear equations are always lines. All linear equations can be written in the form
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This note was uploaded on 11/10/2011 for the course MATH 1310 taught by Professor Staff during the Fall '07 term at Texas State.