linear equations! |
 Jun 5 2008, 06:05 PM
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#1
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Senior Member  Group: Member Posts: 45 Joined: Feb 2008 Member No: 622,075  |
i need to do this and i don't get it ! i've tried like 100 times! help please!
AB y= -2x + 21 BC y= 1x - 12 CA y=2 a) Choose two of the above equations to form a linear system b) Solve the linear system (substitution method of linear combination method.) c) Show that the point above is on the third line by substituting the coordinates into the equation. thanks :) i'm almost pulling my hair out over this. |
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Jun 6 2008, 12:15 AM
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#2
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 in a matter of time Group: Staff Alumni Posts: 7,151 Joined: Aug 2005 Member No: 191,357 |
Then the question is screwed up because it clearly implies that they all share one point.
You have to solve for one point between two lines then prove that same point is on the other line. That just makes no sense. So I'm not completely useless...My previous solution only solves for (9.5,2) |
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Posts in this topic
pointeitoutx3 linear equations! Jun 5 2008, 06:05 PM
RockItStudios this and this might help.
I haven't done this... Jun 5 2008, 07:20 PM gigiopolis Are the A's, B's and C's part of the e... Jun 5 2008, 07:59 PM pointeitoutx3 oh. no, they aren't, Jun 5 2008, 09:36 PM Katalyzt A C and B are variables they are substitutes for n... Jun 5 2008, 09:43 PM
gigiopolis QUOTE(Katalyzt @ Jun 5 2008, 07:43 PM) A ... Jun 5 2008, 09:53 PM mipadi QUOTE(gigiopolis @ Jun 5 2008, 10:53 PM) ... Jun 6 2008, 06:50 PM mipadi Basically, set two of the equations equal to each ... Jun 5 2008, 09:43 PM fire Are you guys assuming that all three lines interse... Jun 6 2008, 12:12 AM Just_Dream Yea it's definitely not working. But I don... Jun 6 2008, 03:45 AM RockItStudios i think AB, BC, and CA are the names of the segmen... Jun 6 2008, 10:44 AM Just_Dream ^ But if it makes a triangle, the point (on the li... Jun 6 2008, 04:59 PM SilentLaugh quickmath.com Jun 6 2008, 05:59 PM ArjunaCapulong lol Asians + Michael arguing
I hate linear equati... Jun 6 2008, 06:06 PM SilentLaugh QUOTE(ArjunaCapulong @ Jun 6 2008, 07:06 ... Jun 8 2008, 05:53 PM moorepocket aw damn, I wanna try this. Jun 6 2008, 08:02 PM pointeitoutx3 omg i am sooo sorry, the third line was x=2. ... Jun 8 2008, 05:50 PM Just_Dream QUOTE(pointeitoutx3 @ Jun 8 2008, 03:50 P... Jun 9 2008, 06:12 PM gigiopolis ^ Yeah, I know right?
Wtf.
Let's just give u... Jun 9 2008, 07:09 PM Just_Dream QUOTE(gigiopolis @ Jun 9 2008, 05:09 PM) ... Jun 11 2008, 11:56 PM |
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