document.write( "Question 637352: Why does the x^2 coefficient of the equation of a parabola determine the direction it opens? \n" ); document.write( "

Algebra.Com's Answer #401574 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( ", the vertex form of a Parabola opening up(a>0) or down(a<0), 
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document.write( "where(h,k) is the vertex  and  x = h  is the Line of Symmetry
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document.write( "Why does the x^2 coefficient of the equation of a parabola determine the direction it opens...
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document.write( "As the value of the 'squared' term (which is always positve) ->infinity,
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document.write( "that coefficient will determine which direction the parabloa heads (to +infinity or -infinity)\r
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document.write( "Same Idea applies to a parabola open right or left
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document.write( ",the vertex form of a Parabola opening right(a>0) or left(a<0), 
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document.write( " where(h,k) is the vertex and  y = k  is the Line of Symmetry
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