document.write( "Question 816441: find the vertex, the focus, and the directrix. then draw the graph\r
\n" ); document.write( "\n" ); document.write( "x^2-16y=0 \n" ); document.write( "
Algebra.Com's Answer #491533 by TimothyLamb(4379)\"\" \"About 
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x^2 - 16y = 0
\n" ); document.write( "(1/16)x^2 - y = 0
\n" ); document.write( "y = (1/16)x^2
\n" ); document.write( "y = 0.0625x^2
\n" ); document.write( "---
\n" ); document.write( "the above quadratic equation is in standard form, with a=0.0625, b=0, and c=0
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\n" ); document.write( "to solve the quadratic equation, plug this:
\n" ); document.write( "0.0625 0 0
\n" ); document.write( "into this: https://sooeet.com/math/quadratic-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "the roots of the quadratic are:
\n" ); document.write( "x = 0
\n" ); document.write( "x = 0
\n" ); document.write( "---
\n" ); document.write( "the vertex is a minimum at: ( 0, 0 )
\n" ); document.write( "---
\n" ); document.write( "the focus is: ( 0, 4 )
\n" ); document.write( "---
\n" ); document.write( "the directrix is: y = -4
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\n" ); document.write( "the graph:
\n" ); document.write( "\"+graph%28+300%2C+300%2C+-30%2C+30%2C+-10%2C+30%2C+0.0625x%5E2%29+\"
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
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\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "
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