document.write( "Question 635457: Find the minimum value for the function: y = x^2 + 9x + 18 \n" ); document.write( "
Algebra.Com's Answer #400348 by lwsshak3(11628)\"\" \"About 
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Find the minimum value for the function:
\n" ); document.write( "y = x^2 + 9x + 18
\n" ); document.write( "This is an equation of a parabola that opens upwards (function has a minimum)
\n" ); document.write( "Its standard form: y=(x-h)^2+k, (h,k)=(x,y) coordinates of vertex, k=minimum value
\n" ); document.write( "complete the square
\n" ); document.write( "y=(x^2+9x+20.25)+18-20.25
\n" ); document.write( "y=(x+9/2)^2-2.25
\n" ); document.write( "minimum value=-2.25\r
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