document.write( "Question 349143: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function. f(x)=8-x^2 \n" ); document.write( "

Algebra.Com's Answer #249651 by Fombitz(32388) $\"\"$ $\"About$

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$\"f%28x%29=-x%5E2%2B8\"$
\n" ); document.write( "Convert to vertex form, $\"y=a%28x-h%29%5E2%2Bk\"$
\n" ); document.write( " $\"f%28x%29=-%28x-0%29%5E2%2B8\"$
\n" ); document.write( "(h,k)=(0,8)
\n" ); document.write( "The vertex lies on the axis of symmetry $\"x=0\"$ .
\n" ); document.write( "Since the multiplier for $\"x%5E2\"$ is negative, the parabola opens downwards and the value at the vertex is a maximum.
\n" ); document.write( " $\"ymax=8\"$
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