Education Technology

Solution 34924: Dots or Lines Appearing on a Graph When Using a TI-84 Plus C Silver Edition.

Why does my graph have lines or dots through the display on my TI-84 Plus C Silver Edition?

After graphing on the TI-84 Plus C Silver Edition a series of dots or lines may appear through the display. The dots represent the graph's grid and when zoomed in to a smaller portion of the graph, can appear as solid lines. This option may be turned on or off by accessing the FORMAT menu.

As an example, graph Y1 = x2 by doing the following:

• Press [Y=].
• In Y1, press [X,T,q,n] [x²].



• Press [ZOOM] [6].



• Pressing [ZOOM] [0] to fit the function properly on the screen.



To turn off the Grid, do the following:

• Press [2ND] [FORMAT].



• Press [↓] [↓].
• Press [ENTER].
• Press [GRAPH].

The dots or lines should no longer be displayed.



Please see the TI-84 Plus C Silver Edition guidebook for additional information.