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HOW TO GRAPH THE GREATEST INTEGER (I.E., FLOOR) FUNCTION ON TI89 CALCULATOR

Steps Key Sequence Screens
1. Start Equation Editor Press 'diamond' key, then F1 (for Y=)
2. Enter Floor Function Press 2nd, then 5 (for Math Menu)
  Press 1 (for Number Submenu)
  Press 6 (for floor()
  Press X key, then ')', then ENTER
3. Change Style of Graph Move cursor to Y1
  Press 2nd, then F1 (to select F6 menu)
  Press 2 (for Dot), then ENTER
4. Graph Press 'diamond' key, then F3 (for GRAPH)