document.write( "Question 169875: a quadratic graph has minimum point (-1,2). find the equation of the graph \n" ); document.write( "
Algebra.Com's Answer #125289 by nerdybill(7384)\"\" \"About 
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Reference:
\n" ); document.write( "http://www.mathwarehouse.com/geometry/parabola/standard-and-vertex-form.php
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\n" ); document.write( "The vertex form of a parabola:
\n" ); document.write( "y= a(x-h)^2+k
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\n" ); document.write( "Where
\n" ); document.write( "(h,k) is the vertex
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\n" ); document.write( "Here they give you the vertex as:
\n" ); document.write( "(h,k) = (-1,2)
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\n" ); document.write( "y= a(x-(-1))^2+2
\n" ); document.write( "And since the problem stated that is was a MINIMUM... 'a' is POSITIVE.
\n" ); document.write( "y= (x+1)^2+2
\n" ); document.write( "y= x^2+2x+1+2
\n" ); document.write( "y= x^2+2x+3\r
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