Students often assume a blank graph means the function failed. More often, the graph exists but the window does not show it, another plot is interfering, or the expression entry is malformed.
Check whether the graph window fits the function
A very steep, very shifted, or very small graph may lie outside the visible range. Adjust the window before assuming the function is missing.
Look for unwanted plots or style settings
Old scatter plots and unusual graph styles can clutter or hide the expected graph behavior.
Verify the expression itself
A small entry mistake can keep the intended graph from ever appearing correctly. Re-check powers, parentheses, and variables.
Key takeaways
- Blank graphs often come from the window, not the function.
- Old plots and settings can interfere visibly.
- Expression accuracy still matters.
Independent note
This guide explains an independent TI-84 style practice workflow and is not official device documentation.