document.write( "Question 7619: I think i basicly have this one. But could you try it to check my work. Thank you.
\n" ); document.write( "Graph the quadratic function. y=16-x^2, state the domain and range. \n" ); document.write( "
Algebra.Com's Answer #4204 by longjonsilver(2297)\"\" \"About 
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quadratic factorises to \"y+=+%284-x%29%284%2Bx%29\"\r
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\n" ); document.write( "\n" ); document.write( "so, \"%284-x%29%284%2Bx%29+=+0\"\r
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\n" ); document.write( "\n" ); document.write( "so the roots are either x=4 or x=-4. \r
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\n" ); document.write( "\n" ); document.write( "As the curve has - x-squared term, it is a n-shape, whose maximum will be at the x-values mid-way between its roots, ie at x=0.\r
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\n" ); document.write( "\n" ); document.write( "When x=0, y is 16.\r
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\n" ); document.write( "\n" ); document.write( "So, domain is xeR
\n" ); document.write( "range is yeR, y<=16\r
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\n" ); document.write( "\n" ); document.write( "jon.
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