Khan/khan-exercises — Issue #8289: Graphing systems of inequalities 2 - Graphing systems of inequalities 2
Author: KhanBugz
Created: 2011-12-10 04:22:28+00:00
State: open
Labels: firefox, wrong-or-unclear, xp

Reporter: lbrooker@OptusNet.com.au

This section does not appear to work correctly. The hints provide the right answer and the answer is different and marked incorrectly.
Marks are in shaded area but answer say they are NOT a solution

[graphing_systems_of_inequalities_2.html?seed=46&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities_2.html?seed=46&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/graphing_systems_of_inequalities_2.html?seed=46&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C122%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22%5C%22%2C%5C%22%5C%22%5D%5D%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22%5C%22%5D%5D%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C5%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22%5C%22%2C%5C%22%5C%22%5D%5D%22%2C3%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-2%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C22%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-4%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C90%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-4%5D%2Cfalse%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C25%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-4%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C20%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C13%5D%2C%5B%22hint-activity%22%2C%220%22%2C13%5D%2C%5B%22hint-activity%22%2C%220%22%2C13%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C14%5D%2C%5B%22hint-activity%22%2C%220%22%2C15%5D%2C%5B%22hint-activity%22%2C%220%22%2C15%5D%2C%5B%22hint-activity%22%2C%220%22%2C15%5D%2C%5B%22hint-activity%22%2C%220%22%2C16%5D%2C%5B%22hint-activity%22%2C%220%22%2C16%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-4%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22(7%2C9\)(7%2C%209\)%20is%20a%20solution%5C%22%2C%5C%22(1%2C3\)(1%2C%203\)%20is%20a%20solution%5C%22%5D%5D%22%2C26%5D%2C%5B%22correct-activity%22%2C%22%5B%5B%5B0%2C-3%5D%2C%5B3%2C-4%5D%2Ctrue%2Cfalse%2C%5B0%2C2%5D%2C%5B1%2C0%5D%2Cfalse%2Ctrue%5D%2C%5B%5C%22%5C%22%2C%5C%22%5C%22%5D%5D%22%2C106%5D%5D)

[[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["",""]],[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution",""]],[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["",""]],[[[0,-3],[3,-2],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-4],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-4],false,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-4],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-4],true,false,[0,2],[1,0],false,true],["(7,9)(7, 9) is a solution","(1,3)(1, 3) is a solution"]],[[[0,-3],[3,-4],true,false,[0,2],[1,0],false,true],["",""]]]

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