# Thread: Graphing an equation on TI-84+ SE

1. ## Graphing an equation on TI-84+ SE

I'm trying to figure out how to enter the following problem on my TI-84+SE:

"Graph the equation -2x-y=1 using slope-intercept form."

What keystrokes do I need to execute to do this? Thanks in advance for your help!

I don't know how to put y into equations either.

The problems I'm working on are not for a class, they're from books I'm studying to get ready for the CLEP test. I'm just trying to apply the calculator to the problems.

Roger

2. Originally Posted by jairtime
I'm trying to figure out how to enter the following problem on my TI-84+SE:

"Graph the equation -2x-y=1 using slope-intercept form."

...
Hello,

1. transcribe the equation to: $y = -2x-1$
2. go to the $\boxed{y=}\text{-editor}$
3. write at \Y1= -2x - 1. Take care that you use the $\boxed{(-)}\text{-key}$ to type the sign in front of 2x
4. open the $\boxed{\text{WINDOW}}\text{-editor}$:
I suggest that you use the following settings:
xmin = -5
xmax = 4
xscl = 1
ymin = -5
ymax = 4
yscl = 1
xres = 1
5. press the $\boxed{\text{GRAPH}}\text{-button}$ to draw the graph.

3. ## Does that mean everything is solved as y?

Thanks, Earboth!

Does that mean that everything is solved as y?

Let's say I have something like 3x * 35y * 22z.

Do I need to solve z as y, x as y and y as y?

If so, can you tell me how that would be done with keystrokes? Maybe there's a better example you can give me.

I don't know how to make signs for square root, etc. on this keyboard. Any advice?

Thanks again

Roger

4. Originally Posted by jairtime
Thanks, Earboth!

Does that mean that everything is solved as y?

Let's say I have something like 3x * 35y * 22z.

Do I need to solve z as y, x as y and y as y?

If so, can you tell me how that would be done with keystrokes? Maybe there's a better example you can give me.

I don't know how to make signs for square root, etc. on this keyboard. Any advice?

Thanks again

Roger
Hello,

honestly I don't understand what you mean.

1. You can only solve an equation. What you have given is a term in 3 veriables which you can't "solve". Please say what you want to do with this term.

2. As for the mathematical symbols which are used at this forum have a look here: http://www.mathhelpforum.com/math-help/735-post1.html