Mathematics
13 Online
OpenStudy (anonymous):
solve the system by graphing and indicate the intersection points
8x-2y=6
3x+y=4
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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
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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?
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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
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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
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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
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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