document.write( "Question 1118925: Which matrix equation represents the system of equations?
\n" ); document.write( "\"-x%2B2y=0\"
\n" ); document.write( "\"y=-2\"\r
\n" ); document.write( "\n" ); document.write( "A) [[-1 2][1 0]][[x][y]]=[[0][-2]]\r
\n" ); document.write( "\n" ); document.write( "B) [[-1 2][0 1]][[x][y]]=[[0][-2]]\r
\n" ); document.write( "\n" ); document.write( "C) [[x][y]][[-1 2][0 1]]=[[0][-2]]\r
\n" ); document.write( "\n" ); document.write( "D) [[-1 2][0 1]][[y][x]]=[[0][-2]]\r
\n" ); document.write( "\n" ); document.write( "I have been told this is an acceptable way to format matrices as plain text. Here is a screenshot in case of any mistakes or for easier viewing.
\n" ); document.write( "https://postimg.cc/image/95cj0idev/ \n" ); document.write( "
Algebra.Com's Answer #734346 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "I haven't seen matrices displayed this way; however, the question you asked makes it clear how the display is to be interpreted.

\n" ); document.write( "The two rows of the first matrix contain the coefficients of the two variables in the two equations: [-1 2] and [0 1].
\n" ); document.write( "The two rows in the second matrix contain the two variables: [x] and [y].
\n" ); document.write( "The product matrix contains the constant terms of the two equations when they are in Ax+By=C form: [0] [-2]

\n" ); document.write( "So answer B. \n" ); document.write( "
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