Question about Texas Instruments TI-89 Calculator

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How to graph linear equation in two variables

Hi i am a new user of the graphing calculator can u tell me how to graph linear equation in two variables? example -2/3x +2. can u give me step by step guidance. thanx

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  • Anonymous Oct 01, 2008

    two variable

  • Anonymous Oct 18, 2008



  • Anonymous Oct 29, 2008

    idk how to do it my techer showed us 3 ways but i still don't get it. ugh

  • Anonymous Jan 08, 2009

    how do i put that same problem in my tx ti 89 caculator

    x- y = -3

  • Anonymous May 08, 2009

    i dont no how to graph tow equations

  • Anonymous Mar 27, 2014

    after having tested stone sand in the lab we were asked to write a report about it,i therefore obtained a graph using the three point method but i cant analyse it,can you please at least provide an example with regard to the plastic limit,linear shrinkage and liquid limit


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I am not quite sure what you are asking...

(1) if asking for graphing y= -2/3x+2, then press [diamond] [F1: Y=] type in .2/3x +2, see graph by [diamond][graph]

(2) if asking for graphing y= -2/3x+a, where a=3x, then first archive a=3x in Home screen by [home], type 3x [sto] a, then go back to y= menu, and type -2/3x+a in Y1

(3) if asking for graphing an equation that is dependent on 2 variables at the same time, use x-y-z axis (aka, change mode to graphing 3-D by [mode]graph [5:3D]) then enter desired equation in y= menu using Z function in terms of x and y aka z(x,y)= ...)

Posted on Jul 23, 2008


Posted on Oct 11, 2008

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Posted on Jun 28, 2010

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Posted on Jan 12, 2009

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Here are two screen captures to show you the equation and the line of best fit.
a696143.jpg 754dc8f.jpg

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I am sorry but I will have to assume that you know how to enter the data through the [MENU][STAT].

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