This page explains how to plot a 2D equation in Graphing Calculator 3D.
            Steps:
            
                - Change the graph type from the "3D" (default) to "2D".
 
                - Type in your equation.
 
            
            Examples:
            Here are some explicit and implicit 2D equations you can type in the program:
            
                - y=x^2
 
                - y=1+sin(x)
 
                - x=2
 
                - x^2+y^2=3^2
 
            
            Optional Steps:
            
                - Click on "Override Default Range" to limit the x and y range.
 
                - Change the resolution to increase or decrease the number of points calculated and displayed in table of values.
 
                - Click on any row in the table of value to see its exact point on the graph.
 
                - Change draw style from "Lines" to "Points".
 
                - Change the color of graph.