While viewing a graph, press to view the zoom menu.

Press the number associated with an option or use the cursor keys to select an option and press .

Press to select Zoom Box which defines a viewing window by selecting the corners of the box.

Press to select Zoom In which displays a smaller viewing area of the graph; magnifying the current graph.

Press to select Zoom Out which displays a larger viewing area of the graph; reducing the current graph.

Press to select Zoom Decimal which makes each pixel represent 0.1 unit. The tic marks on each axis are equally spaced.

Press to select Zoom Square which adjusts xmin and xmax so that the tic marks on the x axis are spaced the same as those on the y axis. This makes a circle appear round.

Press to select Zoom Standard which which sets xmin = -10, xmax = 10, ymin = -10, and ymax = 10.

Press to select Zoom Trig which sets x = /24, xscl to /2, ymin = -4, ymax = 4, and yscl = 0.5 in radian mode.

Press to select Zoom Integer which sets xscl = 10 and yscl = 10, and centers the graph at the cursor location.

Press to select Zoom Data which defines the viewing window so that all data points are shown.

Press to select Zoom Fit which adjusts the window in the y direction to view an entire graph for the xmin and xmax values.

Press to select Memory which accesses the zoom memory options.

Press to select Set Factors which determines the factor by which the zoom in and zoom out options magnify or reduce a graph.