document.write( "Question 46614This question is from textbook College Algebra by Blitzer
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document.write( ": How do I use the substitution method to solve the following system of eqautionsin which the solution consists of ordered pairs?\r
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document.write( "x^2 + y = 4
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document.write( "2x + y = 1 \n" );
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Algebra.Com's Answer #30889 by Nate(3500)![]() ![]() ![]() You can put this solution on YOUR website! 2x + y = 1 \n" ); document.write( "also means: \n" ); document.write( "y = -2x + 1 \n" ); document.write( "plug: \n" ); document.write( "x^2 + y = 4 \n" ); document.write( "x^2 - 2x + 1 = 4 \n" ); document.write( "x^2 - 2x - 3 = 0 \n" ); document.write( "(x - 3)(x + 1) = 0 \n" ); document.write( "x = 3 and x = -1 \n" ); document.write( "plug: \n" ); document.write( "y = -2x + 1 \n" ); document.write( "y = -2(3) + 1 = -5 so (3,-5) \n" ); document.write( "y = -2x + 1 \n" ); document.write( "y = -2(-1) + 1 = 3 (-1,3) \n" ); document.write( " |