document.write( "Question 149285: Find the equation (in standard form) of the line through (1, –7) and (4, –1). Match your result to the correct answer below.
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document.write( "A) 2x + y = 9
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document.write( "B) x-2y=18
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document.write( "C) 2x – y = 9
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document.write( "D) x-2y=9 \n" );
document.write( "
Algebra.Com's Answer #109519 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the equation (in standard form) of the line through (1, –7) and (4, –1). Match your result to the correct answer below. \n" ); document.write( "A) 2x + y = 9 \n" ); document.write( "B) x-2y=18 \n" ); document.write( "C) 2x – y = 9 \n" ); document.write( "D) x-2y=9 \n" ); document.write( "------------ \n" ); document.write( "Determinants is the easiest way \n" ); document.write( "|x y 1| \n" ); document.write( "|1 -7 1| = 0 \n" ); document.write( "|4 -1 1| \n" ); document.write( "------ \n" ); document.write( "x*(-7 - (-1)) - y*(1-4) + 1*(-1 - (-28)) = 0 \n" ); document.write( "-6x + 3y + 27 = 0 \n" ); document.write( "2x-y = 9 (C) \n" ); document.write( " |