linear equations! |
 Jun 5 2008, 06:05 PM
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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, 04:59 PM
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 durian Group: Staff Alumni Posts: 13,124 Joined: Feb 2004 Member No: 3,860 |
^ But if it makes a triangle, the point (on the linear system) would be the intersection at point B (AB to BC), but that point cannot fall in the y=2 line. If it does, then no triangle exists, which doesn't make sense if it's supposed to be line segments. Yea, the problem is most likely wrong.
lol it could be worse though. It could be... VECTOR CALCULUSSSSS |
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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 gigiopolis Then the question is screwed up because it clearly... Jun 6 2008, 12:15 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 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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