document.write( "Question 920453: Consider h(x)=3x²+9x-4. Identify its vertex and y-intercept \n" ); document.write( "

Algebra.Com's Answer #558387 by Fombitz(32388) $\"\"$ $\"About$

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Convert to vertex form by completing the square.
\n" ); document.write( " $\"h%28x%29=3x%5E2%2B9x-4\"$
\n" ); document.write( " $\"h%28x%29=3%28x%5E2%2B3x%29-4\"$
\n" ); document.write( " $\"h%28x%29=3%28x%5E2%2B3x%2B9%2F4%29-4-3%289%2F4%29\"$
\n" ); document.write( " $\"h%28x%29=3%28x%2B3%2F2%29%5E2-16%2F4-27%2F4\"$
\n" ); document.write( " $\"h%28x%29=3%28x%2B3%2F2%29%5E2-43%2F4\"$
\n" ); document.write( "The vertex is (-3/2,-43/4).
\n" ); document.write( "The y-intercept is (0,-4) \n" ); document.write( "

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