Beginning Graphing Hints for TI's
I am using a TI83. There is little difference between the TI83plus, TI83, and the TI82 for graphing. For shading with the TI82, use the SHADE function.


Example
1 Press GRAPH after entering equations. Notice how each graph is steeping than the previous one. This is the slope of the line. Experiment with different slopes. i.e. y = 2x, y = (1/2)x y = mx where m is the slope of the line 
Press the Y =
key (noted by a red dot) Notice the = signs are highlighted. Highlighting the = signs turns the equations on which allows you to see their graphs when GRAPH is pressed. 

I pressed TRACE after pressing GRAPH. Use the arrow keys to move left and right along Y1 (equation 1) . Use the arrows keys (up and down) to scroll between each equation. If you don't see the expression in the upper
lefthand corner, press 2nd
FORMAT, (above ZOOM key) and make sure everything is highlighted on the left hand side. 



Graph the equations y = x and y = x +5  



You may need to clear old equations by moving the cursor to the desired line in the "Y =" screen and press CLEAR.  Remember to press TRACE to see equations and coordinates. 






Place your cursor to the left of Y1 and press ENTER . There are 7 different lime modes available. Try them all!! 

