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Mathematics 13 Online
OpenStudy (anonymous):

solve the system by graphing and indicate the intersection points 8x-2y=6 3x+y=4

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

I recommend you use geogebra to graph the lines

jimthompson5910 (jim_thompson5910):

so if you can, download and install that program (it's free)

OpenStudy (anonymous):

ok downloading

jimthompson5910 (jim_thompson5910):

ok great, it should be straight forward to use, but feel free ask about it if you're stuck

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

its not helping me

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

sorry got distracted

jimthompson5910 (jim_thompson5910):

so you got it to download?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

it changes my input

OpenStudy (anonymous):

its not helping

jimthompson5910 (jim_thompson5910):

ok in the input bar, copy and paste in 8x-2y=6

jimthompson5910 (jim_thompson5910):

it does that, but it doesn't change the equation

OpenStudy (anonymous):

i did

jimthompson5910 (jim_thompson5910):

ok did you type or paste in 3x+y=4

OpenStudy (anonymous):

paste

jimthompson5910 (jim_thompson5910):

so you set up two lines, they should cross somewhere

OpenStudy (anonymous):

yes

jimthompson5910 (jim_thompson5910):

where

OpenStudy (anonymous):

1

jimthompson5910 (jim_thompson5910):

it's an ordered pair

OpenStudy (anonymous):

1,1

jimthompson5910 (jim_thompson5910):

yep (1,1) is the solution

jimthompson5910 (jim_thompson5910):

they cross at (1,1) so x = 1 and y = 1 is the solution to the original system

jimthompson5910 (jim_thompson5910):

hopefully you see how that works

OpenStudy (anonymous):

thanks

jimthompson5910 (jim_thompson5910):

np

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