Question about Texas Instruments TI-82 Calculator

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Hi how do i solve x + 2y = 4 on my tI 82

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  • Anonymous Nov 09, 2008

    Y3-1.94Y2+0.559=0

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2 Answers

M=3 , b=-1

Posted on Oct 17, 2008

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You should first put it in the form y=mx+b
m-slope
b-y-intercept
x + 2y=4
-x -x 1subtract x from both sides

2y=4-x
/2 /2 2 divide both sides by 2 (to get y alone)

y=2- x/2 now you can put that into your calc. (Y= button)it would like like this on your screen Y1=2-X/2 (X is found under mode)
next hit graph

2nd, TABLE will give you a list of x-values and y-values
hoped i didn't leave anything out and i hope this helped

Posted on Jan 17, 2008

  • AndyPugh Jan 17, 2008

    The work didn't come out well he it is again

    x + 2y= 4

    -x -x

    1subtract x from both sides



    2y= 4-x

    /2 /2



    2 divide each side by 2





    your left with y=2-x/2

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1 Answer

X+2y=4


Just solve for 1 variable.
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Now you can graph this and find all the values for x and y that give you the solution.

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'
\ '
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\ '
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Solving systems of equations by elimination


Hi joanmae jmeh;

You can add these equations just like you would numbers

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When you add the 2 equations together the +2y and the -2y cancel
out

Hope this helps Loringh Please leave a rating for me Thks

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