GRAPHINGAlgebraFigure 8 Cartesian Coordinate Graph ofQuadratic Equation or FunctionFigure 9 Cartesian Coordinate Graph ofExponential Equation or FunctionNomographsFigure 10 Typical NomographA nomograph is a device used to relate thephysical quantities in such a way that the value ofan unknown quantity can be determined given thevalues of the other related quantities. Nomographsnormally involve the relationship among threephysical quantities. The scales are located insuch a way that, when a straight line is drawnbetween the values of the known quantities ontheir respective scales, the line crosses the valueof the unknown quantity on its scale. Figure 10is a typical nomograph that relates the distancetraveled, the average speed, and the time traveled.It should be noted that, as with any graphicalrepresentation, the values determined are onlyapproximations.MA-02 Page 82 Rev. 0
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