HOW TO EVALUATE A FUNCTION WITH TI83 CALCULATOR

Steps	Key Sequence	Screens
1. Input Function or Piecewise-Defined Function
METHOD 1:
2. Quit Equation Editor	Press 2nd, then MODE (for QUIT)
3. Evaluate Function for any x Value (e.g., x = 2.5)	Press VARS key
	Press right arrow key once (to highlight Y-VARS)
	Press ENTER (for Function...)
	Press ENTER (for Y1)
	Type appropriate x-value in parentheses
	Press ENTER
NOTE: If f(x) = x2 + 3x + 5, then f(2) = 15.
4. Evaluate Function for another x Value	Type 2nd, then ENTER (for ENTRY)
	Move cursor to the inside ( ), type new value for x, then ENTER
	Type new value for x, then ENTER
	Press ENTER
METHOD 2:
2. Graph the Function	Press GRAPH
3. Evaluate Function for any x Value (e.g., x = 2)	Press TRACE key
	Type appropriate x-value, then ENTER
NOTE: If y = x2 + 3x + 5, then y = 15.
4. Evaluate Function for another x Value	Type another x-value, then ENTER
METHOD 3:
2. Create Table of Values for Function