document.write( "Question 1060415: I need your assistance to help find the quadratic function that models the data below please.\r
\n" ); document.write( "\n" ); document.write( "xI -3 -2 -1 0 1 2 3 4 5 6 7 8 9
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\n" ); document.write( "yI 54 26 -8 0 2 14 36 68 110 162 224 296 378\r
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\n" ); document.write( "\n" ); document.write( "I need help with this please. When I look at this all i'm seeing is a chart I don't know how I would work this out \n" ); document.write( "

Algebra.Com's Answer #675485 by MathTherapy(10551) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "I need your assistance to help find the quadratic function that models the data below please.\r
\n" ); document.write( "\n" ); document.write( "xI -3 -2 -1 0 1 2 3 4 5 6 7 8 9
\n" ); document.write( "-----------------------------------------------------------------------
\n" ); document.write( "yI 54 26 -8 0 2 14 36 68 110 162 224 296 378\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I need help with this please. When I look at this all i'm seeing is a chart I don't know how I would work this out
\n" ); document.write( "

The EASIEST way to do this is to take the 3 EASIEST points to get the quadratic function. These points are: (0, 0), (- 1, - 8), and (1, 2)				
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document.write( "Quadratic function: 
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document.write( "(0, 0)
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document.write( " --------- Substituting point (0, 0) for (x, y)				
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document.write( "0 + 0 + c = 0____ ------ eq (i)\r
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document.write( "(- 1, - 8)
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document.write( " ---- Substituting point (- 1, - 8) for (x, y), and 0 for c
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document.write( "a - b = - 8 ----- eq (ii)\r
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document.write( "(1, 2) 	
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document.write( " --------- Substituting point (1, 2) for (x, y), and 0 for c				
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document.write( "a + b = 2 ------- eq (iii)
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document.write( "2a = - 6 -------- Adding eqs (ii) & (iii)
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document.write( "- 3 + b = 2 ------- Substituting - 3 for a in eq (iii)
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document.write( " ------- Substituting - 3 for a, 5 for b, and 0 for c
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document.write( "Quadratic function:  \n" );
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