Question about Texas Instruments TI-82 Calculator

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

Posted by on

• Anonymous Nov 09, 2008

Y3-1.94Y2+0.559=0

×

M=3 , b=-1

Posted on Oct 17, 2008

• Level 1:

An expert who has achieved level 1.

Corporal:

An expert that hasĀ over 10 points.

Problem Solver:

An expert who has answered 5 questions.

• Contributor

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

×

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
Good luck!

Posted on Jan 02, 2017

×

my-video-file.mp4

×

## Related Questions:

### X+2y=4

Just solve for 1 variable.
x+2y=4
2y=4-x
y=(4-x)/2

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

Jun 09, 2011 | Texas Instruments TI-89 Calculator

### 90=15(2y=2)

If you mean this to be a logic statement, it will always be false (0). You might be getting an error because you need parentheses around the whole thing.
If you mean the 2y=2 to be 2y 2 then y=2
If you mean the 2y=2 to be 2y-2 then y=4

Apr 30, 2011 | Texas Instruments TI-83 Plus Calculator

### F 'x=x^2+2y^2 f'y=2y(x^2+2y^2) can some one help me to find stationary points for the above function

If those are the partial derivatives, then the stationary point should be (0,0). Because if you set the partial derivatives to zero and solve for x and y then the only solutions are x=0 and y=0.

Feb 10, 2011 | Texas Instruments TI-89 Calculator

### How to find the polynomial roots in TI-83 Plus

One way is to use the Polynomial Root Finder and Simultaneous Equation Solver app.

Press the APPS key, then select PlySmlt2 and press ENTER. Press ENTER to get past the opening screen, then select "POLY ROOT FINDER" and press ENTER. Select the order of the polynomial and other settings as desired. Press F5 (the GRAPH key) to go to the next screen. Enter the polynomial coefficients, then press F5 to solve. The next screen will show you the roots (unless you selected real roots and the polynomial doesn't have any real roots).

If you don't have the app installed, you can download it from
http://education.ti.com/educationportal/sites/US/productDetail/us_poly_83_84.html

Jan 20, 2011 | Texas Instruments TI-83 Plus Calculator

### Find the derivative of a function

to do that you replace x with y ex: f(x)=2x+3 f(x) is your y so f(x)=y you now have y=2x+3 switch x and y x=2y+3 now solve for y x-3=2y (x-3)/2=y y is now equal to the derivative of a function also shown as f^-1 (x-3)/2=f^-1(x) all ^ mean to that power

Jan 14, 2011 | Texas Instruments TI-81 Calculator

### 2X+4Y=-8

2x + 4y = -8 ; divide each side by 2
x + 2y = -4 ; subtract x from both sides
2y = -4 - x ; rearrange
2y = -1x -4 ; divide each side by 2
y = -1/2x - 2 ; relate to slope/intercept form of line (y=mx+b)

implies there are multiple solutions that fall along a line with slope -1/2 and y intercept of -2
'
\ '
++++++++++
\ '
\ '
Sample points on this line are (-4,0), (-2,-1), (0,-2), (2,-3)

Nov 04, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

### How do i solve an equation like 8(3x-5)-4=4x-10 where i have something on both sides of the = sign on a TI 82?

The easiest solution would be to move the variable to only one side. This is not that difficult. For example your given equation is 8(3x-5)-4=4x-10; subtracting both sides of this equation by 4x would give 8(3x-5)-4-4x=10.

Jun 28, 2010 | Texas Instruments TI-82 Calculator

### 4x+8y=20 -4x+2y=-30

4x+8y=20 || /4
x+2y=5
x=5-2y

-4x+2y=-30 || /2
-2x+y=-15
-2(5-2y)+y=-15
-10+4y+y=-15
5y=-5
y=-1

x=5-2y || y=-1
x=5-2(-1)
x=5+2
x=7

Mar 10, 2009 | Bagatrix Algebra Solved! 2005 (105101) for...

### Solving systems of equations by elimination

Hi joanmae jmeh;

You can add these equations just like you would numbers

3x + 2y = 7
5x - 2y = 1
-----------------------
8x =8
x=1
Now plug x = 1 back into either equation and you can solve for y
Y = 2

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

Dec 01, 2008 | Bagatrix Algebra Solved! 2005 (105101) for...

## Open Questions:

#### Related Topics:

125 people viewed this question

Level 3 Expert

Level 2 Expert