document.write( "Question 379796: F(x)=10x^2+40x+42 identify the y intercept and the axis of symmetry \n" ); document.write( "

Algebra.Com's Answer #269652 by Fombitz(32388) $\"\"$ $\"About$

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When $\"x=0\"$ , $\"y=42\"$
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\n" ); document.write( "Complete the square to convert the equation to vertex form, $\"y=a%28x-h%29%5E2%2Bk\"$ in order to deterine the axis of symmetry.
\n" ); document.write( " $\"f%28x%29=10x%5E2%2B40x%2B42\"$
\n" ); document.write( " $\"f%28x%29=10%28x%5E2%2B4x%29%2B42\"$
\n" ); document.write( " $\"f%28x%29=10%28x%5E2%2B4x%2B4%29%2B42-10%284%29\"$
\n" ); document.write( " $\"f%28x%29=10%28x%2B2%29%5E2%2B2\"$
\n" ); document.write( "The vertex is ( $\"-2\"$ , $\"2\"$ ) and the vertex lies on the axis of symmetry $\"x=-2\"$ .
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