document.write( "Question 931856: f(x) = x2 + 2x - 9
\n" ); document.write( " is it max or min \n" ); document.write( "

Algebra.Com's Answer #565838 by ewatrrr(24785) $\"\"$ $\"About$

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f(x) = x2 + 2x - 9
\n" ); document.write( "f(x) = (x+1)^2 - 1 - 9
\n" ); document.write( "f(x) = (x+1)^2 - 10 Parabola opening Up a = 1> 0
\n" ); document.write( "V(-1,-10) min
\n" ); document.write( ".....
\n" ); document.write( "the vertex form of a Parabola opening up(a>0) or down(a<0),
\n" ); document.write( " $\"y=a%28x-h%29%5E2+%2Bk\"$
\n" ); document.write( "where(h,k) is the vertex and x = h is the Line of Symmetry
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