document.write( "Question 935284: Which statement is true about this function f(x)= -4x^2-8x+4
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Algebra.Com's Answer #568470 by MathTherapy(10552)\"\" \"About 
You can put this solution on YOUR website!
Which statement is true about this function f(x)= -4x^2-8x+4
\n" ); document.write( "a) the range is less than or equal to 4
\n" ); document.write( "b) the range is less than or equal to 8
\n" ); document.write( "c) the domain is greater than or equal to 0
\n" ); document.write( "d) the domain is greater than or equal to -1
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document.write( "\"f%28x%29+=+-+4x%5E2+-+8x+%2B+4\"
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document.write( "Since a < 0, the parabola y will have a maximum
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document.write( "x-coordinate of vertex: \"x+=+-+b%2F2a\"______\"x+=+-+%28-+8%29%2F2%28-+4%29\"_____\"x+=+8%2F%28-+8%29\"________\"x+=+-+1\"
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document.write( "\"f%28x%29+=+-+4x%5E2+-+8x+%2B+4\"
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document.write( "With x-coordinate of the vertex of the parabola at: \"x+=+-+1\", its y-coordinate is: 
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document.write( "\"f%28-+1%29+=+-+4%28-+1%29%5E2+-+8%28-+1%29+%2B+4\", or \"f%28-+1%29+=+-+4+%2B+8+%2B+4\", or \"f%28-+1%29+=+8\" 
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document.write( "Thus, the range of the parabola will be: \"highlight_green%28y+%3C=+8%29\" \n" );
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