How To Graph On A Ti84 Plus Ce?
How to Graph on a TI84 Plus CE
The TI84 Plus CE is a powerful graphing calculator that can be used to graph functions, solve equations, and perform other mathematical operations. In this article, we will show you how to graph functions on the TI84 Plus CE. We will cover the basics of graphing, including how to enter functions, set up the graph, and change the viewing window. We will also discuss some advanced graphing techniques, such as graphing parametric equations and polar equations.
By the end of this article, you will be able to use the TI84 Plus CE to graph a variety of functions and equations. You will also be able to use the calculator to solve problems involving graphs.
Step  Instructions  Screenshot 

1  Press 2nd Y=  
2  Enter the equation of the function you want to graph in the Y= editor.  
3  Press Graph  
4  To move the graph, use the arrow keys.  
5  To zoom in or out on the graph, use the + and – keys.  
6  To change the graph’s appearance, use the Mode menu. 
The TI84 Plus CE is a graphing calculator that can be used to graph functions, equations, and inequalities. It is a powerful tool that can be used to help students learn about math and science. This guide will show you how to graph on a TI84 Plus CE.
Entering Data
To enter data into a graph, you can use the following steps:
1. Press the Y= button.
2. Enter the equation of the function you want to graph.
3. Press the Graph button.
The graph of the function will be displayed on the screen.
You can also enter points into a graph. To do this, follow these steps:
1. Press the 2nd button.
2. Press the Mode button.
3. Select Stat.
4. Press the Enter button.
5. Press the 1 button.
6. Enter the xcoordinate of the point you want to graph.
7. Press the Enter button.
8. Enter the ycoordinate of the point you want to graph.
9. Press the Enter button.
The point will be added to the graph.
You can also enter inequalities into a graph. To do this, follow these steps:
1. Press the 2nd button.
2. Press the Mode button.
3. Select Stat.
4. Press the Enter button.
5. Press the 4 button.
6. Enter the inequality you want to graph.
7. Press the Enter button.
The inequality will be displayed on the graph.
Viewing and Manipulating Graphs
Once you have entered data into a graph, you can view and manipulate it using the following steps:
 To zoom in on a graph, press the + or – buttons.
 To pan a graph, press the < or **>** buttons.
 To change the viewing window, press the Window button.
 To add labels to a graph, press the 2nd button.
 Press the Trace button.
 Select the option you want to use.
This guide has shown you how to graph on a TI84 Plus CE. With a little practice, you will be able to use this powerful tool to graph functions, equations, and inequalities.
Here are some additional resources that you may find helpful:
 [TI84 Plus CE Manual](https://education.ti.com/en/products/calculators/ti84plusce/downloads)
 [TI84 Plus CE Tutorials](https://education.ti.com/en/products/calculators/ti84plusce/tutorials)
 [TI84 Plus CE Forums](https://education.ti.com/en/products/calculators/ti84plusce/forums)
3. Solving Equations and Inequalities Graphically
The TI84 Plus CE can be used to solve equations and inequalities graphically. This can be a helpful tool for understanding the solutions to equations and inequalities, and for finding approximate solutions when exact solutions are not possible.
To solve an equation graphically, you can first graph the equation on the TI84 Plus CE. Then, you can use the graph to find the points where the graph crosses the xaxis. These points are the solutions to the equation.
For example, consider the equation `y = x^2 – 4`. To graph this equation, you would first enter the equation into the TI84 Plus CE’s Y= editor. Then, you would press `GRAPH` to view the graph.
The graph of the equation `y = x^2 – 4` is a parabola that opens up. The parabola crosses the xaxis at the points `2` and `2`. Therefore, the solutions to the equation `y = x^2 – 4` are `2` and `2`.
You can also use the TI84 Plus CE to solve inequalities graphically. To do this, you would first graph the inequality on the TI84 Plus CE. Then, you would use the graph to find the points where the graph is either completely above or completely below the xaxis. These points represent the solutions to the inequality.
For example, consider the inequality `y < x^2  4`. To graph this inequality, you would first enter the inequality into the TI84 Plus CE's Y= editor. Then, you would press `GRAPH` to view the graph. The graph of the inequality `y < x^2  4` is a parabola that opens up. The parabola is completely below the xaxis for all values of x greater than or equal to 2. Therefore, the solutions to the inequality `y < x^2  4` are all values of x greater than or equal to 2. 4. Using Graphs to Understand Functions
The TI84 Plus CE can be used to graph functions. This can be a helpful tool for understanding the behavior of functions, and for finding important information about functions, such as their domain, range, and intercepts.
To graph a function on the TI84 Plus CE, you can first enter the function into the TI84 Plus CE’s Y= editor. Then, you would press `GRAPH` to view the graph.
The graph of a function can tell you a lot about the function. For example, the graph of a function can show you the following:
 The domain and range of the function
 The intercepts of the function
 The intervals where the function is increasing or decreasing
 The intervals where the function is concave up or concave down
 The relative extrema of the function
 The asymptotes of the function
By understanding the graph of a function, you can gain a deeper understanding of the function itself. This can be helpful for solving problems involving the function, and for making predictions about the behavior of the function.
Here are some specific examples of how you can use graphs to understand functions:
 To find the domain and range of a function, you can look at the graph of the function. The domain of a function is the set of all values of x for which the function is defined. The range of a function is the set of all values of y that the function can take on.
 To find the intercepts of a function, you can look at the graph of the function. The xintercepts of a function are the points where the graph crosses the xaxis. The yintercepts of a function are the points where the graph crosses the yaxis.
 To find the intervals where a function is increasing or decreasing, you can look at the graph of the function. The intervals where a function is increasing are the intervals where the graph goes up from left to right. The intervals where a function is decreasing are the intervals where the graph goes down from left to right.
 To find the intervals where a function is concave up or concave down, you can look at the graph of the function. The intervals where a function is concave up are the intervals where the graph curves up from left to right. The intervals where a function is concave down are the intervals where the graph curves down from left to right.
 To find the relative extrema of a function, you can look at the graph of the function. The relative extrema of a function are the points where the graph changes from increasing to decreasing or vice versa.
 To find the asymptotes of a function, you can look at the graph of the
How do I graph a function on a TI84 Plus CE?
1. Press the Y= key to enter the Y= editor.
2. Type the function you want to graph, using the following syntax:
Y =
where
3. Press the Graph button to graph the function.
How do I change the graph’s axes?
1. Press the 2nd MODE key to enter the Mode menu.
2. Use the arrow keys to select the XRange or YRange option.
3. Enter the desired minimum and maximum values for the axis.
4. Press the Enter key to save your changes.
How do I add a title to my graph?
1. Press the 2nd GRAPH key to enter the Graph Settings menu.
2. Use the arrow keys to select the Title option.
3. Enter the desired title for your graph.
4. Press the Enter key to save your changes.
How do I save my graph?
1. Press the 2nd Y= key to enter the Y= editor.
2. Press the STO key and select the GRAPH option.
3. Enter a name for your graph.
4. Press the Enter key to save your graph.
How do I recall a saved graph?
1. Press the 2nd Y= key to enter the Y= editor.
2. Press the STO key and select the GRAPH option.
3. Use the arrow keys to select the graph you want to recall.
4. Press the Enter key to recall the graph.
In this tutorial, we have shown you how to graph on a TI84 Plus CE. We covered the basics of graphing, including how to enter functions, set axes, and plot points. We also showed you how to use some of the more advanced features of the graphing calculator, such as parametric equations, polar equations, and inequalities.
We hope that this tutorial has been helpful. If you have any questions, please feel free to leave them in the comments below.
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