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October, 2024

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Quick Algebra Question! 10/10 and major rep!

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FatWhore
Posts: 2213 - Karma: 1,098
So, my algebra teacher sucks. We have a final tomorrow and she didn't teach us half the shit that's on it. Basically were solving systems of equations. I have a equation, 2x - y = 1. Then to make it into slope intercept form, i subtract 2x from both sides, making it -y= -2x + 1. Normally that would be graphed m= -2/1 and b=1, but what if the y is negative? Does that change anything?

Spark Notes: what happens if the y is negative in y=mx+b?
May 31 2012 8:50PM
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2_fadez
Posts: 7780 - Karma: 4,183
flip dat shit up side down
May 31 2012 8:51PM
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ikindalikeskiing
Posts: 1381 - Karma: 142
Multiply it all by -1
May 31 2012 8:52PM
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2_fadez
Posts: 7780 - Karma: 4,183
fuck i dont know

enter in points in a graph and findout
be curious. you'll learn more
May 31 2012 8:52PM
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crazysincethe80s
Posts: 257 - Karma: 20
Flip it like yay
May 31 2012 8:52PM
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penguin_steeze
Posts: 2311 - Karma: 241
divide everything by -1 so that y will be positive
May 31 2012 8:52PM
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rankstank
Posts: 1033 - Karma: 223
-y=-2x+1 is the same as y=2x-1
May 31 2012 8:54PM
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EvanWalz
Posts: 273 - Karma: 347
this man, right here, is correct
May 31 2012 8:54PM
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FatWhore
Posts: 2213 - Karma: 1,098
thanks! 10/10
May 31 2012 8:55PM
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The_Beekeeper
Posts: 843 - Karma: 302
Just change the signs of every term, i.e. multiply by -1.
May 31 2012 8:55PM
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FatWhore
Posts: 2213 - Karma: 1,098
thanks 10/10!
May 31 2012 8:55PM
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1337
Posts: 31054 - Karma: 29,232
people have the hardest time with the number 1
May 31 2012 9:00PM
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LoathesRaisins
Posts: 3612 - Karma: 4,735
Math is pretty cool if you have a good teacher.
May 31 2012 9:06PM
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manutdsaol
Posts: 906 - Karma: 56
This yo the y has to be positive
May 31 2012 9:07PM
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Bodhisattva_
Posts: 5749 - Karma: 2,009
"she didn't teach us" is not a valid excuse. Pay attention and quit being an asshat in class, it'll pay off.
May 31 2012 9:08PM
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oil.
Posts: 2255 - Karma: 1,254
captivating, isn't it
May 31 2012 9:08PM
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FatWhore
Posts: 2213 - Karma: 1,098
She had a baby and was out, the sub hired was a lang. arts teacher...

May 31 2012 9:10PM
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TimRiley
Posts: 1873 - Karma: 1,327
-y= -2x + 1 muliply through by -1. y= -1(-2x +1) final answer to graph slope y=2x -1
May 31 2012 9:10PM
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Barefootin_Fiend
Posts: 7618 - Karma: 4,727
winner winner chicken dinner
May 31 2012 9:12PM
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SpaghettiWizard
Posts: 2825 - Karma: 166
Sidebar - Are you the guy who got mad at me for doing the callout at tyrol?
May 31 2012 9:15PM
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Bodhisattva_
Posts: 5749 - Karma: 2,009
Lolololll ok that is an acceptable excuse.
May 31 2012 9:19PM
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Flacko
Posts: 1495 - Karma: 788
i thought that meant the y intecept was negetive on the y axis, so it would be below the x axis
May 31 2012 9:21PM
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Casper.
Posts: 622 - Karma: 65
Correct
May 31 2012 9:42PM
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cool_name
Posts: 4295 - Karma: 3,131
http://www.khanacademy.org/ haven't used it personally but have heard good things about it
Jun 1 2012 1:17AM
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Lucas
Posts: 4881 - Karma: 1,575
Haha oh shit this happend to my friends and there class average on tests have been at like 60% for the last month
Jun 1 2012 1:32AM
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mynamegus
Posts: 33 - Karma: 12
if you multiply or divide by -1 (ive been shown both) then you will go from -y=-2x+1 ->y=2x-1.
Jun 1 2012 2:02AM
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Gypsy_Skier
Posts: 2666 - Karma: 5,237
6th grade memories..
Jun 1 2012 2:11AM
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navierSTOKED
Posts: 858 - Karma: 33
on the plus side, you know she's dtf
Jun 1 2012 2:12AM
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Mr.LemonPie
Posts: 4100 - Karma: 1,625
And if you ever need any more help...
http://www.khanacademy.org/math/algebra
Jun 1 2012 2:17AM
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cobra_commander
Posts: 16909 - Karma: 4,686
please tell me you are in middle school.

This was one of the dumbest things I have read regarding math in a long time.
Jun 1 2012 2:53AM
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taylornicky
Posts: 2889 - Karma: 2,579
.......I like you....
Jun 1 2012 3:09AM
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