document.write( "Question 461156: The point (5, 7) lies on the line -2x + 8y = 46. Determine if this point is a solution of the system
\n" ); document.write( "-2x + 8y = 46\r
\n" ); document.write( "\n" ); document.write( "x – 2y = -9
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Algebra.Com's Answer #316307 by robertb(5830)\"\" \"About 
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It's enough to check if the coordinates of the point (5,7) satisfy the bottom equation x - 2y = -9:\r
\n" ); document.write( "\n" ); document.write( "5 - 2*7 = 5 - 14 = -9.\r
\n" ); document.write( "\n" ); document.write( "Hence the point is also on the line x - 2y = -9, and the point is a solution of the system.
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