Mathematics
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OpenStudy (anonymous):
y=5x+1 4x+y=10 help me Im desperate
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jimthompson5910 (jim_thompson5910):
4x+y=10
4x+5x+1=10 ... plug in y = 5x + 1 (ie replace y with 5x+1)
9x + 1 = 10
9x = 10-1
I'll let you finish
jimthompson5910 (jim_thompson5910):
you first solve that for x
then you use the solution for x to get y
OpenStudy (anonymous):
Can you help me? I have to do a bunch of these for extra credit in order to compete in sports next weekend and I do not know how to do this at all
jimthompson5910 (jim_thompson5910):
when you solve 9x = 10-1 for x, what do you get
OpenStudy (anonymous):
Uhhhhhhh I know you deffinitly get a number? Ha.....ha....ha o.o im so screwewd
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jimthompson5910 (jim_thompson5910):
9x = 10-1
9x = 9
x = ???
OpenStudy (anonymous):
oh oh oh oh 1!!!
jimthompson5910 (jim_thompson5910):
don't panic and just take things one step at a time
you'll be fine
jimthompson5910 (jim_thompson5910):
yep x = 1
OpenStudy (anonymous):
:D
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jimthompson5910 (jim_thompson5910):
now we know that y = 5x + 1
so...
y = 5x + 1
y = 5(1) + 1
y = ???
OpenStudy (anonymous):
uhhhhh 6?
jimthompson5910 (jim_thompson5910):
good
jimthompson5910 (jim_thompson5910):
so together, the solution is x = 1, y = 6
jimthompson5910 (jim_thompson5910):
they form the ordered pair (1,6)
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OpenStudy (anonymous):
So does that make it (1,6)?
OpenStudy (anonymous):
Oh yay! :D I like love you right now haha
jimthompson5910 (jim_thompson5910):
what this means is that if you graphed both equations
they would be two lines that cross at the point (1,6)
jimthompson5910 (jim_thompson5910):
yes you got it
OpenStudy (anonymous):
yayayayayayaya haha now I finnially get it o.o I see the light!
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jimthompson5910 (jim_thompson5910):
lol that's good, you need it to read and such
OpenStudy (anonymous):
Lol yea light is important