I need to know how to graph the following equation in a ti 84 plus calculator:

y=1.475x+30

y=.850x+77.5

I also need to know how to see where those lines intersect. thank you

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The calculator only displays from -10 to 10 on the x and y axes, and both of your lines are outside of that range. However, it is easy to change that.

1. Hit the gray "WINDOW" button that is directly under the screen

2. Change "Xmax" to 150

3. Change "Ymax" to 200

Remember to change both of those values back to 10 when you are done with this problem!

Here's how to graph it:

1. Hit the "Y=" button

2. Enter your first equation after Y1, and your second equation after Y2

3. Look over both the equations to make sure you typed them correctly

4. Hit the "GRAPH" button

5. If you don't see the intersection you will need to adjust Xmax and Ymax again

6. Hit Hit "2ND" and the "TRACE" to bring up the "CALC" menu

7. Scroll down to "intersect" and hit enter

8. Hit enter 3 times (You use the first and second curve options when you have more than 2 lines)

9. It should display the coordinates at the bottom

10. I got (76, 142.1) for the intersection

Thanks for asking this question! I used to do this a much harder way, but while I was calculating the answer to your question I hit a wrong button and accidentally found this method!

Posted on Jun 30, 2009

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Posted on Jan 02, 2017

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Your calculator cannot, natively, perform 3D graphing.

Jan 28, 2013 | Texas Instruments TI-84 Plus Calculator

You can't simply enter 7x+9=30 into the calculator, there is a way to calculate what the x is but its been a few years since I've done these..

Oct 03, 2008 | Texas Instruments TI-83 Plus Calculator

You have to use **Y Editor** to define functions on the both sides of the equation and then graph it. Finally option is **F5: Intersection**.

See captured images for equation**5x+10=-2x-7**, **y1=5x+10**, **y2=-2x-7** and **x=-17/7**

See captured images for equation

Feb 25, 2012 | Texas Instruments TI-89 Calculator

You need to fix your graph so that it shows the correct y-axis and x-axis.

It works best if you press the zoom button and then scroll to find the ZoomFit option.

Then the graph should show up.

It works best if you press the zoom button and then scroll to find the ZoomFit option.

Then the graph should show up.

Jun 15, 2011 | Texas Instruments TI-84 Plus Calculator

did you put one in each of 2 y =???

Also, check your window to make sure the numbers fit the x and y values in both graphs

Also, check your window to make sure the numbers fit the x and y values in both graphs

Mar 24, 2010 | Texas Instruments TI-84 Plus Calculator

Hello,

Please, read the following, even if you already know some of its contents.

Hope it helps.

Please, read the following, even if you already know some of its contents.

- Once you enter an equation, the corresponding equal sign is
highlighted by default.
- Before you draw the 2 graphs, move the cursor
to Y3 or Y4 and verify that the = signs for Y1 and Y2 remain
highlighted.
- If one is not highlighted, move the cursor on it and press ENTER.
- If you still have problem, press [2nd][STATPLOTS][4: PlotsOff] [ENTER].
- Command
**PlotsOff**echoes on main screen. - Press [ENTER], screen displays
**Done.** **Restart the graphing procedure.**- If all else fails, just reset the RAM by pressing [2nd][MEM][7:Reset][1:All RAM][2:Reset], press [CLEAR] to clear the message.

Hope it helps.

Nov 10, 2009 | Texas Instruments TI-84 Plus Calculator

Hello,

To enter the inequation you split it into two inequalities

Graph is as follows

Use [2nd][CATALOG] to access the relaional operators less than or equal, greater than or equal, and the operator AND.

To access the inequality signs scroll upwards from abs( to reach the bottom of the catalog.

Note: You can use t as variable only in parametric graphs. Use x.

Hope it helps.

To enter the inequation you split it into two inequalities

Graph is as follows

Use [2nd][CATALOG] to access the relaional operators less than or equal, greater than or equal, and the operator AND.

To access the inequality signs scroll upwards from abs( to reach the bottom of the catalog.

Note: You can use t as variable only in parametric graphs. Use x.

Hope it helps.

Oct 19, 2009 | Texas Instruments TI-84 Plus Silver...

The TI 83, 84 seris can not store more than 10 equations. the TI 86 and above can have infinate, but not the 83, 84s. If you have catalog help in your apps, you can run that, and it will be able to tell you all the syntax of every function it has.

Nov 22, 2008 | Texas Instruments TI-84 Plus Silver...

go to apps menu, go to transform app. click uninstall and go to y= screnn and should be a slash on the left and you should be able to graph more than one equation.

Aug 27, 2008 | Texas Instruments TI-84 Plus Calculator

The first solution will allow you to watch your
calculator graph two equations simultaneously rather than finishing one
before graphing the next; it won't solve the problem of having the
calculator unselect one equation when you select a second. To fix
that problem, try the following:

In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.

- doug garfinkel, Children's Day School

In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.

- Press [APPS] key
- Select Transfrm from the menu
- Press 1:Uninstall

- doug garfinkel, Children's Day School

Jan 15, 2008 | Texas Instruments TI-84 Plus Silver...

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