document.write( "Question 703933: Find the equation of the parabola when the x intercept is -6, y intercept is 36 and axis of symmetry is x=-6.\r
\n" ); document.write( "\n" ); document.write( "Can you please help me? Thanks so much in advance
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Algebra.Com's Answer #433834 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
The only way that both the x-intercept and
\n" ); document.write( "the axis of symmetry can \"+-+6+\" is if the
\n" ); document.write( "parabola just touches the x-axis and thus
\n" ); document.write( "only has 1 solution- called a double root.
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\n" ); document.write( "If the y intercept is positive, that tells me
\n" ); document.write( "the parabola has a minimum and not a maximum.
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\n" ); document.write( "If the form is:
\n" ); document.write( "\"+y+=+a%2Ax%5E2+%2B+b%2Ax+%2B+c+\"
\n" ); document.write( "The roots ( x-intercepts ) are given by:
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "When there is a double root,
\n" ); document.write( "\"+b%5E2+=+4%2Aa%2Ac+\"
\n" ); document.write( "\"+a+=+b%5E2%2F%284c%29+\"
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\n" ); document.write( "The y-intercept occurs at ( 0,36 ), so
\n" ); document.write( "\"+36+=+a%2A0+%2B+b%2A0+%2B+c+\"
\n" ); document.write( "\"+c+=+36+\"
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\n" ); document.write( "The x-coordinate of the axis of symmetry is at \"+-b%2F%282a%29+\"
\n" ); document.write( "\"+-6+=+-b%2F%282a%29+\"
\n" ); document.write( "\"+b+=+12a+\"
\n" ); document.write( "By substitution:
\n" ); document.write( "\"+b+=+12%2A%28+b%5E2+%2F+%28+4%2A36%29+%29+\"
\n" ); document.write( "\"+144b+=+12b%5E2+\"
\n" ); document.write( "\"+b+=+12+\"
\n" ); document.write( "and, since
\n" ); document.write( "\"+b+=+12a+\"
\n" ); document.write( "\"+a+=+b%2F12+\"
\n" ); document.write( "\"+a+=+12%2F12+\"
\n" ); document.write( "\"+a+=+1+\"
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\n" ); document.write( "The equation is
\n" ); document.write( "\"+y+=+x%5E2+%2B+12x+%2B+36+\"
\n" ); document.write( "\"+y+=+%28+x+%2B+6+%29%5E2+\"
\n" ); document.write( "Here's the plot:
\n" ); document.write( "\"+graph%28+400%2C+400%2C+-14%2C+2%2C+-2%2C+50%2C+%28+x+%2B+6+%29%5E2+%29+\" \r
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