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Math Help - Graphing an equation on TI-84+ SE

  1. #1
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    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
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  2. #2
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    Quote Originally Posted by jairtime View Post
    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.
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  3. #3
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    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
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  4. #4
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    Quote Originally Posted by jairtime View Post
    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
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