document.write( "Question 1120263: In the xy-plane, if the parabola with equation y = ax^2 + bx + c, where a,b,and c are constants, passes through the point (-1,1), which of the following must be true?
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\n" ); document.write( "D. a - b + c = 1
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Algebra.Com's Answer #735924 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "What is given to you, means that the value of the function \"y\" is equal to 1 at x= -1.\r\n" );
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document.write( "In turn, it means that\r\n" );
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document.write( "a*(-1)^2 + b*(-1) + c = 1,    or, which is the same,\r\n" );
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document.write( "a - b + c = 1.\r\n" );
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document.write( "Answer.  Option D.\r\n" );
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