Texas Instruments TI-83 - 1.6 Lines; Square Screens

Select 1: abs( and the absolute value function will appear in Y
1.
NOTE: If abs(
appears on your home screen rather than in Y
1
, you forgot to press Y = !
You should have the following on your screen:
Press X, T, θ, n to put the variable x after the abs( and finally press ). Hit ENTER.
In Y
2
, we put 4 to graph Y
2
= 4. Set the viewing window so Xmin = -6, Xmax = 6,
Xscl = 1, Ymin = 0, Ymax = 6, and Yscl = 1. Press graph and use INTERSECT twice to
obtain the solution -4 < x < 4 since the graph of Y
1
is below the graph of Y
2
in this
interval. w
1.6 Lines
Square Screens
To get a square screen on the TI-83 press ZOOM and select option 5: ZSquare.
ZOOM