document.write( "Question 204670: Hi all, Im still having trouble with these graphing problems, I need to;
\n" ); document.write( "Find equation of the line plane through the three points:
\n" ); document.write( "(1,-1,-2),(2,1,2) and (-2,0,-7)
\n" ); document.write( "Im not sure how to do it, so a solution with steps and explanations would be great.
\n" ); document.write( "Thanks, -Nick \n" ); document.write( "
Algebra.Com's Answer #154958 by Alan3354(69443)\"\" \"About 
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Hi all, Im still having trouble with these graphing problems, I need to;
\n" ); document.write( "Find equation of the line plane through the three points:
\n" ); document.write( "(1,-1,-2),(2,1,2) and (-2,0,-7)
\n" ); document.write( "----------------------------
\n" ); document.write( "Do you mean the plane? 3 points determine a plane.
\n" ); document.write( "The best way to do these, imo, is to use a matrix.
\n" ); document.write( "|x +y +z 1|
\n" ); document.write( "|1 -1 -2 1|
\n" ); document.write( "|2 +1 2 1| = 0
\n" ); document.write( "|-2 0 -7 1|
\n" ); document.write( "----------
\n" ); document.write( "(the + signs are for spacing)
\n" ); document.write( "2x + y - z = 3 is the plane.
\n" ); document.write( "------------------------
\n" ); document.write( "As a check, all 3 points fit the equation. \n" ); document.write( "
\n" );