document.write( "Question 1045147: When the function y=h(x)=ax^2+bx+c is graphed in the x-y plane, the result is a parabola with vertex at (4,7). If h(2)=0, which of the following must also equal to 0?\r
\n" ); document.write( "\n" ); document.write( "a.)h(5)
\n" ); document.write( "b.) h(6)
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\n" ); document.write( "d.) h)9) \n" ); document.write( "

Algebra.Com's Answer #660570 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "When the function y=h(x)=ax^2+bx+c is graphed in the x-y plane, the result is a parabola with vertex at (4,7). If h(2)=0, which of the following must also equal to 0?\r
\n" ); document.write( "\n" ); document.write( "a.)h(5)
\n" ); document.write( "b.) h(6)
\n" ); document.write( "c.) h(8)
\n" ); document.write( "d.) h)9)
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document.write( " ------- Vertex form 
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document.write( " ------ Substituting 0 for y, 2 for x, 4 for h, and 7 for k  
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document.write( "- 7 = 4a_______ = a
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document.write( "Function:  \r
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document.write( "Now, you can substitute each answer choice into the above function to see which one gives a value of 0, or you can easily look at the equation
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document.write( "and determine WHAT VALUE x can be replaced with, and when combined with - 4, and the result is squared, results in a value of 4. That MUST be 6.
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document.write( "Therefore, it must be  \n" );
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