document.write( "Question 208602: I am stuck on this algebra. Any help would be appreciated...\r
\n" ); document.write( "\n" ); document.write( "Graph f(x) = x^2+2x-6\r
\n" ); document.write( "\n" ); document.write( "What is the vertex? Coordinate pair.
\n" ); document.write( "What is the line of symmetry? x=
\n" ); document.write( "Is it max or min?\r
\n" ); document.write( "\n" ); document.write( "I don't have this chapter in my book I am using. \n" ); document.write( "
Algebra.Com's Answer #157979 by RAY100(1637)\"\" \"About 
You can put this solution on YOUR website!
y=x^2 +2x -6
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\n" ); document.write( "(y+6) = x^2 +2x,,,,,,looking for form (y-k) = (x-h)^2,,,,with vertex(h,k)
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\n" ); document.write( "therefore complete the square, x^2 +2x + 1,,,,,(2/2)^2=1
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\n" ); document.write( "add +1 to both sides of eqn
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\n" ); document.write( "y+6+1 = x^2 +2x +1
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\n" ); document.write( "(y+7) = (x+1)^2,,,,,,,,therefore vertex at (-1,-7)
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\n" ); document.write( "positive coefficient of x^2 ,,,therefore opening up,,,y parabola
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\n" ); document.write( "vertex is at a min,,,as pointing up.
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\n" ); document.write( "line of symmetry is at ,,,,x=-1
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\n" ); document.write( "Just check a few points,,(0,-6) and (-2,-6),,,,ok \n" ); document.write( "
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