Solution 34920: Graphing an Inequality Containing the Absolute Value on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
How can I graph an inequality containing the absolute value on the TI-83 Plus and TI-84 Plus family of graphing calculators?The instructions below demonstrate how to input and graph the abs( or absolute value function:
Example: Graph |2x+3|>9
• Press [Y=].
• Press [MATH].
• Scroll right to highlight NUM and press  to select abs(.
• Press  [X,T,θ,n] [+] . Next for the TI-84 Plus Family: Press [Right Arrow] to move to the right of the absolute value equation. For the the TI-83 Plus Family press [ ) ].
• Press [2ND] [TEST]  to select > then press 
• Press [Zoom] then press  to select ZStandard and the graph below should be displayed.
Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.